problems.json

{
  "84": {
    "id": 84,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=84",
    "source": {
      "sourceString": "2011 November Bronze",
      "year": 2011,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Contest Timing",
      "place": 1,
      "name": "Contest Timing"
    },
    "input": "ctiming.in",
    "output": "ctiming.out",
    "samples": [
      {
        "input": "12 13 14\n",
        "output": "1563\n"
      }
    ]
  },
  "85": {
    "id": 85,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=85",
    "source": {
      "sourceString": "2011 November Bronze",
      "year": 2011,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Awkward Digits",
      "place": 2,
      "name": "Awkward Digits"
    },
    "input": "digits.in",
    "output": "digits.out",
    "samples": [
      {
        "input": "1010\n212\n",
        "output": "14\n"
      }
    ]
  },
  "86": {
    "id": 86,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=86",
    "source": {
      "sourceString": "2011 November Bronze",
      "year": 2011,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Moo Sick",
      "place": 3,
      "name": "Moo Sick"
    },
    "input": "moosick.in",
    "output": "moosick.out",
    "samples": [
      {
        "input": "6\n1\n8\n5\n7\n9\n10\n3\n4\n6\n7\n",
        "output": "2\n2\n4\n"
      }
    ]
  },
  "87": {
    "id": 87,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=87",
    "source": {
      "sourceString": "2011 November Bronze",
      "year": 2011,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "4. Cow Beauty Pageant (Bronze Level)",
      "place": 4,
      "name": "Cow Beauty Pageant (Bronze Level)"
    },
    "input": "pageant.in",
    "output": "pageant.out",
    "samples": [
      {
        "input": "6 16\n................\n..XXXX....XXX...\n...XXXX....XX...\n.XXXX......XXX..\n........XXXXX...\n.........XXX....\n",
        "output": "3\n"
      }
    ]
  },
  "88": {
    "id": 88,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=88",
    "source": {
      "sourceString": "2011 November Silver",
      "year": 2011,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Cow Beauty Pageant (Silver Level)",
      "place": 1,
      "name": "Cow Beauty Pageant (Silver Level)"
    },
    "input": "pageant.in",
    "output": "pageant.out",
    "samples": [
      {
        "input": "6 16\n................\n..XXXX....XXX...\n...XXXX....XX...\n.XXXX......XXX..\n........XXXXX...\n..XXX....XXX....\n",
        "output": "4\n"
      }
    ]
  },
  "89": {
    "id": 89,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=89",
    "source": {
      "sourceString": "2011 November Silver",
      "year": 2011,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Cow Lineup",
      "place": 2,
      "name": "Cow Lineup"
    },
    "input": "lineup.in",
    "output": "lineup.out",
    "samples": [
      {
        "input": "6\n25 7\n26 1\n15 1\n22 3\n20 1\n30 1\n",
        "output": "4\n"
      }
    ]
  },
  "90": {
    "id": 90,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=90",
    "source": {
      "sourceString": "2011 November Silver",
      "year": 2011,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Tile Exchanging",
      "place": 3,
      "name": "Tile Exchanging"
    },
    "input": "tilechng.in",
    "output": "tilechng.out",
    "samples": [
      {
        "input": "3 6\n3\n3\n1\n",
        "output": "5\n"
      }
    ]
  },
  "91": {
    "id": 91,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=91",
    "source": {
      "sourceString": "2011 November Gold",
      "year": 2011,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Above the Median",
      "place": 1,
      "name": "Above the Median"
    },
    "input": "median.in",
    "output": "median.out",
    "samples": [
      {
        "input": "4 6\n10\n5\n6\n2\n",
        "output": "7\n"
      }
    ]
  },
  "92": {
    "id": 92,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=92",
    "source": {
      "sourceString": "2011 November Gold",
      "year": 2011,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Binary Sudoku",
      "place": 2,
      "name": "Binary Sudoku"
    },
    "input": "bsudoku.in",
    "output": "bsudoku.out",
    "samples": [
      {
        "input": "000000000\n001000100\n000000000\n000110000\n000111000\n000000000\n000000000\n000000000\n000000000\n",
        "output": "3\n"
      }
    ]
  },
  "93": {
    "id": 93,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=93",
    "source": {
      "sourceString": "2011 November Gold",
      "year": 2011,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Cow Steeplechase",
      "place": 3,
      "name": "Cow Steeplechase"
    },
    "input": "steeple.in",
    "output": "steeple.out",
    "samples": [
      {
        "input": "3\n4 5 10 5\n6 2 6 12\n8 3 8 5\n",
        "output": "2\n"
      }
    ]
  },
  "94": {
    "id": 94,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=94",
    "source": {
      "sourceString": "2011 December Bronze",
      "year": 2011,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Hay Bales",
      "place": 1,
      "name": "Hay Bales"
    },
    "input": "haybales.in",
    "output": "haybales.out",
    "samples": [
      {
        "input": "4\n2\n10\n7\n1\n",
        "output": "7\n"
      }
    ]
  },
  "95": {
    "id": 95,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=95",
    "source": {
      "sourceString": "2011 December Bronze",
      "year": 2011,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Cow Photography (Bronze Level)",
      "place": 2,
      "name": "Cow Photography (Bronze Level)"
    },
    "input": "photo.in",
    "output": "photo.out",
    "samples": [
      {
        "input": "5\n1 \n2 \n3 \n4 \n5\n2\n1\n3\n4\n5\n3\n1\n2\n4\n5\n4\n1\n2\n3\n5\n5\n1\n2\n3\n4\n",
        "output": "1\n2\n3\n4\n5\n"
      }
    ]
  },
  "96": {
    "id": 96,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=96",
    "source": {
      "sourceString": "2011 December Bronze",
      "year": 2011,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Escaping the Farm",
      "place": 3,
      "name": "Escaping the Farm"
    },
    "input": "escape.in",
    "output": "escape.out",
    "samples": [
      {
        "input": "5\n522\n6\n84\n7311\n19\n",
        "output": "3\n"
      }
    ]
  },
  "97": {
    "id": 97,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=97",
    "source": {
      "sourceString": "2011 December Silver",
      "year": 2011,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Cow Photography",
      "place": 1,
      "name": "Cow Photography"
    },
    "input": "photo.in",
    "output": "photo.out",
    "samples": [
      {
        "input": "5\n10 \n20 \n30 \n40 \n50\n20\n10\n30\n40\n50\n30\n10\n20\n40\n50\n40\n10\n20\n30\n50\n50\n10\n20\n30\n40\n",
        "output": "10\n20\n30\n40\n50\n"
      }
    ]
  },
  "98": {
    "id": 98,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=98",
    "source": {
      "sourceString": "2011 December Silver",
      "year": 2011,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Roadblock",
      "place": 2,
      "name": "Roadblock"
    },
    "input": "rblock.in",
    "output": "rblock.out",
    "samples": [
      {
        "input": "5 7\n2 1 5\n1 3 1\n3 2 8\n3 5 7\n3 4 3\n2 4 7\n4 5 2\n",
        "output": "2\n"
      }
    ]
  },
  "99": {
    "id": 99,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=99",
    "source": {
      "sourceString": "2011 December Silver",
      "year": 2011,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Umbrellas for Cows",
      "place": 3,
      "name": "Umbrellas for Cows"
    },
    "input": "umbrella.in",
    "output": "umbrella.out",
    "samples": [
      {
        "input": "6 12\n1\n2\n11\n8\n4\n12\n2\n3\n4\n4\n8\n9\n15\n16\n17\n18\n19\n19\n",
        "output": "9\n"
      }
    ]
  },
  "100": {
    "id": 100,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=100",
    "source": {
      "sourceString": "2011 December Gold",
      "year": 2011,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Cow Photography",
      "place": 1,
      "name": "Cow Photography"
    },
    "input": "photo.in",
    "output": "photo.out",
    "samples": [
      {
        "input": "5\n10 \n20 \n30 \n40 \n50\n20\n10\n30\n40\n50\n30\n10\n20\n40\n50\n40\n10\n20\n30\n50\n50\n10\n20\n30\n40\n",
        "output": "10\n20\n30\n40\n50\n"
      }
    ]
  },
  "101": {
    "id": 101,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=101",
    "source": {
      "sourceString": "2011 December Gold",
      "year": 2011,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Simplifying the Farm",
      "place": 2,
      "name": "Simplifying the Farm"
    },
    "input": "simplify.in",
    "output": "simplify.out",
    "samples": [
      {
        "input": "4 5\n1 2 1\n3 4 1\n1 3 2\n1 4 2\n2 3 2\n",
        "output": "4 3\n"
      }
    ]
  },
  "102": {
    "id": 102,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=102",
    "source": {
      "sourceString": "2011 December Gold",
      "year": 2011,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Grass Planting",
      "place": 3,
      "name": "Grass Planting"
    },
    "input": "grassplant.in",
    "output": "grassplant.out",
    "samples": [
      {
        "input": "4 6\n1 4\n2 4\n3 4\nP 2 3\nP 1 3\nQ 3 4\nP 1 4\nQ 2 4\nQ 1 4\n",
        "output": "2\n1\n2\n"
      }
    ]
  },
  "103": {
    "id": 103,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=103",
    "source": {
      "sourceString": "2012 January Bronze",
      "year": 2012,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Gifts",
      "place": 1,
      "name": "Gifts"
    },
    "input": "gifts.in",
    "output": "gifts.out",
    "samples": [
      {
        "input": "5 24\n4 2\n2 0\n8 1\n6 3\n12 5\n",
        "output": "4\n"
      }
    ]
  },
  "104": {
    "id": 104,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=104",
    "source": {
      "sourceString": "2012 January Bronze",
      "year": 2012,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Haybale Stacking",
      "place": 2,
      "name": "Haybale Stacking"
    },
    "input": "stacking.in",
    "output": "stacking.out",
    "samples": [
      {
        "input": "7 4\n5 5\n2 4\n4 6\n3 5\n",
        "output": "1\n"
      }
    ]
  },
  "105": {
    "id": 105,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=105",
    "source": {
      "sourceString": "2012 January Bronze",
      "year": 2012,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Grazing Patterns",
      "place": 3,
      "name": "Grazing Patterns"
    },
    "input": "grazing.in",
    "output": "grazing.out",
    "samples": [
      {
        "input": "4\n3 2\n3 3\n3 4\n3 1\n",
        "output": "1\n"
      }
    ]
  },
  "106": {
    "id": 106,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=106",
    "source": {
      "sourceString": "2012 January Silver",
      "year": 2012,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Delivery Route",
      "place": 1,
      "name": "Delivery Route"
    },
    "input": "delivery.in",
    "output": "delivery.out",
    "samples": [
      {
        "input": "4\n2 2\n2 4\n2 1\n1 3\n",
        "output": "12\n"
      }
    ]
  },
  "107": {
    "id": 107,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=107",
    "source": {
      "sourceString": "2012 January Silver",
      "year": 2012,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Bale Share",
      "place": 2,
      "name": "Bale Share"
    },
    "input": "baleshare.in",
    "output": "baleshare.out",
    "samples": [
      {
        "input": "8\n14\n2\n5\n15\n8\n9\n20\n4\n",
        "output": "26\n"
      }
    ]
  },
  "108": {
    "id": 108,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=108",
    "source": {
      "sourceString": "2012 January Silver",
      "year": 2012,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Mountain Climbing",
      "place": 3,
      "name": "Mountain Climbing"
    },
    "input": "climb.in",
    "output": "climb.out",
    "samples": [
      {
        "input": "3\n6 4\n8 1\n2 3\n",
        "output": "17\n"
      }
    ]
  },
  "109": {
    "id": 109,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=109",
    "source": {
      "sourceString": "2012 January Gold",
      "year": 2012,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Video Game",
      "place": 1,
      "name": "Video Game"
    },
    "input": "combos.in",
    "output": "combos.out",
    "samples": [
      {
        "input": "3 7\nABA\nCB\nABACB\n",
        "output": "4\n"
      }
    ]
  },
  "110": {
    "id": 110,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=110",
    "source": {
      "sourceString": "2012 January Gold",
      "year": 2012,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Cow Run",
      "place": 2,
      "name": "Cow Run"
    },
    "input": "cowrun.in",
    "output": "cowrun.out",
    "samples": [
      {
        "input": "2 2 0\nTT\n1 0 0 0 0 0 0 1\n0 1 1 1 0 0 1 0\n",
        "output": "TB\n"
      }
    ]
  },
  "111": {
    "id": 111,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=111",
    "source": {
      "sourceString": "2012 January Gold",
      "year": 2012,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Bovine Alliance",
      "place": 3,
      "name": "Bovine Alliance"
    },
    "input": "alliance.in",
    "output": "alliance.out",
    "samples": [
      {
        "input": "5 4\n1 2\n3 2\n4 5\n4 5\n",
        "output": "6\n"
      }
    ]
  },
  "112": {
    "id": 112,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=112",
    "source": {
      "sourceString": "2012 February Bronze",
      "year": 2012,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Rope Folding",
      "place": 1,
      "name": "Rope Folding"
    },
    "input": "folding.in",
    "output": "folding.out",
    "samples": [
      {
        "input": "5 10\n0\n10\n6\n2\n4\n",
        "output": "4\n"
      }
    ]
  },
  "113": {
    "id": 113,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=113",
    "source": {
      "sourceString": "2012 February Bronze",
      "year": 2012,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Overplanting (Bronze)",
      "place": 2,
      "name": "Overplanting (Bronze)"
    },
    "input": "planting.in",
    "output": "planting.out",
    "samples": [
      {
        "input": "2\n0 5 4 1\n2 4 6 2\n",
        "output": "20\n"
      }
    ]
  },
  "114": {
    "id": 114,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=114",
    "source": {
      "sourceString": "2012 February Bronze",
      "year": 2012,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Moo",
      "place": 3,
      "name": "Moo"
    },
    "input": "moo.in",
    "output": "moo.out",
    "samples": [
      {
        "input": "11\n",
        "output": "m\n"
      }
    ]
  },
  "115": {
    "id": 115,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=115",
    "source": {
      "sourceString": "2012 February Silver",
      "year": 2012,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Overplanting (Silver)",
      "place": 1,
      "name": "Overplanting (Silver)"
    },
    "input": "planting.in",
    "output": "planting.out",
    "samples": [
      {
        "input": "2\n0 5 4 1\n2 4 6 2\n",
        "output": "20\n"
      }
    ]
  },
  "116": {
    "id": 116,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=116",
    "source": {
      "sourceString": "2012 February Silver",
      "year": 2012,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Cow IDs",
      "place": 2,
      "name": "Cow IDs"
    },
    "input": "cowids.in",
    "output": "cowids.out",
    "samples": [
      {
        "input": "7 3\n",
        "output": "10110\n"
      }
    ]
  },
  "117": {
    "id": 117,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=117",
    "source": {
      "sourceString": "2012 February Silver",
      "year": 2012,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Relocation",
      "place": 3,
      "name": "Relocation"
    },
    "input": "relocate.in",
    "output": "relocate.out",
    "samples": [
      {
        "input": "5 6 3\n1\n2\n3\n1 2 1\n1 5 2\n3 2 3\n3 4 5\n4 2 7\n4 5 10\n",
        "output": "12\n"
      }
    ]
  },
  "118": {
    "id": 118,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=118",
    "source": {
      "sourceString": "2012 February Gold",
      "year": 2012,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Cow Coupons",
      "place": 1,
      "name": "Cow Coupons"
    },
    "input": "coupons.in",
    "output": "coupons.out",
    "samples": [
      {
        "input": "4 1 7\n3 2\n2 2\n8 1\n4 3\n",
        "output": "3\n"
      }
    ]
  },
  "119": {
    "id": 119,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=119",
    "source": {
      "sourceString": "2012 February Gold",
      "year": 2012,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Symmetry",
      "place": 2,
      "name": "Symmetry"
    },
    "input": "symmetry.in",
    "output": "symmetry.out",
    "samples": [
      {
        "input": "4\n0 0\n0 1\n1 0\n1 1\n",
        "output": "4\n"
      }
    ]
  },
  "120": {
    "id": 120,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=120",
    "source": {
      "sourceString": "2012 February Gold",
      "year": 2012,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Nearby Cows",
      "place": 3,
      "name": "Nearby Cows"
    },
    "input": "nearcows.in",
    "output": "nearcows.out",
    "samples": [
      {
        "input": "6 2\n5 1\n3 6\n2 4\n2 1\n3 2\n1\n2\n3\n4\n5\n6\n",
        "output": "15\n21\n16\n10\n8\n11\n"
      }
    ]
  },
  "121": {
    "id": 121,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=121",
    "source": {
      "sourceString": "2012 March Bronze",
      "year": 2012,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Times 17",
      "place": 1,
      "name": "Times 17"
    },
    "input": "times17.in",
    "output": "times17.out",
    "samples": [
      {
        "input": "10110111\n",
        "output": "110000100111\n"
      }
    ]
  },
  "122": {
    "id": 122,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=122",
    "source": {
      "sourceString": "2012 March Bronze",
      "year": 2012,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Connect the Cows",
      "place": 2,
      "name": "Connect the Cows"
    },
    "input": "connect.in",
    "output": "connect.out",
    "samples": [
      {
        "input": "4\n0 1\n2 1\n2 0\n2 -5\n",
        "output": "2\n"
      }
    ]
  },
  "123": {
    "id": 123,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=123",
    "source": {
      "sourceString": "2012 March Bronze",
      "year": 2012,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Wrong Directions",
      "place": 3,
      "name": "Wrong Directions"
    },
    "input": "wrongdir.in",
    "output": "wrongdir.out",
    "samples": [
      {
        "input": "FF\n",
        "output": "3\n"
      }
    ]
  },
  "124": {
    "id": 124,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=124",
    "source": {
      "sourceString": "2012 March Silver",
      "year": 2012,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Tractor",
      "place": 1,
      "name": "Tractor"
    },
    "input": "tractor.in",
    "output": "tractor.out",
    "samples": [
      {
        "input": "7 6 3\n6 2\n5 2\n4 3\n2 1\n7 3\n5 4\n6 4\n",
        "output": "1\n"
      }
    ]
  },
  "125": {
    "id": 125,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=125",
    "source": {
      "sourceString": "2012 March Silver",
      "year": 2012,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Flowerpot",
      "place": 2,
      "name": "Flowerpot"
    },
    "input": "fpot.in",
    "output": "fpot.out",
    "samples": [
      {
        "input": "4 5\n6 3\n2 4\n4 10\n12 15\n",
        "output": "2\n"
      }
    ]
  },
  "126": {
    "id": 126,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=126",
    "source": {
      "sourceString": "2012 March Silver",
      "year": 2012,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Landscaping",
      "place": 3,
      "name": "Landscaping"
    },
    "input": "landscape.in",
    "output": "landscape.out",
    "samples": [
      {
        "input": "4 100 200 1\n1 4\n2 3\n3 2\n4 0\n",
        "output": "210\n"
      }
    ]
  },
  "127": {
    "id": 127,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=127",
    "source": {
      "sourceString": "2012 March Gold",
      "year": 2012,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Large Banner",
      "place": 1,
      "name": "Large Banner"
    },
    "input": "banner.in",
    "output": "banner.out",
    "samples": [
      {
        "input": "2 2 1 3 100\n",
        "output": "28\n"
      }
    ]
  },
  "128": {
    "id": 128,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=128",
    "source": {
      "sourceString": "2012 March Gold",
      "year": 2012,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Haybale Restacking",
      "place": 2,
      "name": "Haybale Restacking"
    },
    "input": "restack.in",
    "output": "restack.out",
    "samples": [
      {
        "input": "4\n7 1\n3 4\n9 2\n1 13\n",
        "output": "13\n"
      }
    ]
  },
  "129": {
    "id": 129,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=129",
    "source": {
      "sourceString": "2012 March Gold",
      "year": 2012,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Cows in a Skyscraper",
      "place": 3,
      "name": "Cows in a Skyscraper"
    },
    "input": "skyscraper.in",
    "output": "skyscraper.out",
    "samples": [
      {
        "input": "4 10\n5\n6\n3\n7\n",
        "output": "3\n2 1 3\n1 2\n1 4\n"
      }
    ]
  },
  "130": {
    "id": 130,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=130",
    "source": {
      "sourceString": "2012 US Open Bronze",
      "year": 2012,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Cows in a Row",
      "place": 1,
      "name": "Cows in a Row"
    },
    "input": "cowrow.in",
    "output": "cowrow.out",
    "samples": [
      {
        "input": "9\n2\n7\n3\n7\n7\n3\n7\n5\n7\n",
        "output": "4\n"
      }
    ]
  },
  "131": {
    "id": 131,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=131",
    "source": {
      "sourceString": "2012 US Open Bronze",
      "year": 2012,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Three Lines",
      "place": 2,
      "name": "Three Lines"
    },
    "input": "3lines.in",
    "output": "3lines.out",
    "samples": [
      {
        "input": "6\n1 7\n0 0\n1 2\n2 0\n1 4\n3 4\n",
        "output": "1\n"
      }
    ]
  },
  "132": {
    "id": 132,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=132",
    "source": {
      "sourceString": "2012 US Open Bronze",
      "year": 2012,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Islands",
      "place": 3,
      "name": "Islands"
    },
    "input": "islands.in",
    "output": "islands.out",
    "samples": [
      {
        "input": "8\n3\n5\n2\n3\n1\n4\n2\n3\n",
        "output": "4\n"
      }
    ]
  },
  "133": {
    "id": 133,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=133",
    "source": {
      "sourceString": "2012 US Open Bronze",
      "year": 2012,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": false,
    "title": {
      "titleString": "4. Unlocking Blocks",
      "place": 4,
      "name": "Unlocking Blocks"
    },
    "input": "unlock.in",
    "output": "unlock.out",
    "samples": [
      {
        "input": "12 3 5\n0 0\n1 0\n2 0\n3 0\n3 1\n0 1\n0 2\n0 3\n0 4\n1 4\n2 4\n3 4\n2 1\n2 2\n1 2\n2 3\n3 3\n4 3\n4 4\n4 2\n",
        "output": "1\n"
      }
    ]
  },
  "134": {
    "id": 134,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=134",
    "source": {
      "sourceString": "2012 US Open Silver",
      "year": 2012,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Unlocking Blocks (Silver)",
      "place": 1,
      "name": "Unlocking Blocks (Silver)"
    },
    "input": "unlock.in",
    "output": "unlock.out",
    "samples": [
      {
        "input": "12 3 5\n0 0\n1 0\n2 0\n3 0\n3 1\n0 1\n0 2\n0 3\n0 4\n1 4\n2 4\n3 4\n2 1\n2 2\n1 2\n2 3\n3 3\n4 3\n4 4\n4 2\n",
        "output": "5\n"
      }
    ]
  },
  "135": {
    "id": 135,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=135",
    "source": {
      "sourceString": "2012 US Open Silver",
      "year": 2012,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Bookshelf (Silver)",
      "place": 2,
      "name": "Bookshelf (Silver)"
    },
    "input": "bookshelf.in",
    "output": "bookshelf.out",
    "samples": [
      {
        "input": "5 10\n5 7\n9 2\n8 5\n13 2\n3 8\n",
        "output": "21\n"
      }
    ]
  },
  "136": {
    "id": 136,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=136",
    "source": {
      "sourceString": "2012 US Open Silver",
      "year": 2012,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Running Laps",
      "place": 3,
      "name": "Running Laps"
    },
    "input": "running.in",
    "output": "running.out",
    "samples": [
      {
        "input": "4 2 100\n20\n100\n70\n1\n",
        "output": "4\n"
      }
    ]
  },
  "137": {
    "id": 137,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=137",
    "source": {
      "sourceString": "2012 US Open Gold",
      "year": 2012,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "1. Tied Down",
      "place": 1,
      "name": "Tied Down"
    },
    "input": "tied.in",
    "output": "tied.out",
    "samples": [
      {
        "input": "2 10 6 1\n2 3\n2 1\n6 1\n2 4\n1 1\n2 0\n3 1\n1 3\n5 4\n3 0\n0 1\n3 2\n6 1\n",
        "output": "1\n"
      }
    ]
  },
  "138": {
    "id": 138,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=138",
    "source": {
      "sourceString": "2012 US Open Gold",
      "year": 2012,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "2. Bookshelf",
      "place": 2,
      "name": "Bookshelf"
    },
    "input": "bookshelf.in",
    "output": "bookshelf.out",
    "samples": [
      {
        "input": "5 10\n5 7\n9 2\n8 5\n13 2\n3 8\n",
        "output": "21\n"
      }
    ]
  },
  "139": {
    "id": 139,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=139",
    "source": {
      "sourceString": "2012 US Open Gold",
      "year": 2012,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": false,
    "title": {
      "titleString": "3. Balanced Cow Subsets",
      "place": 3,
      "name": "Balanced Cow Subsets"
    },
    "input": "subsets.in",
    "output": "subsets.out",
    "samples": [
      {
        "input": "4\n1\n2\n3\n4\n",
        "output": "3\n"
      }
    ]
  },
  "187": {
    "id": 187,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=187",
    "source": {
      "sourceString": "2012 November Bronze",
      "year": 2012,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Find the Cow!",
      "place": 1,
      "name": "Find the Cow!"
    },
    "input": "cowfind.in",
    "output": "cowfind.out",
    "samples": [
      {
        "input": ")((()())())\n",
        "output": "4\n"
      }
    ]
  },
  "188": {
    "id": 188,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=188",
    "source": {
      "sourceString": "2012 November Bronze",
      "year": 2012,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Typo",
      "place": 2,
      "name": "Typo"
    },
    "input": "typo.in",
    "output": "typo.out",
    "samples": [
      {
        "input": "()(())))\n",
        "output": "4\n"
      }
    ]
  },
  "189": {
    "id": 189,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=189",
    "source": {
      "sourceString": "2012 November Bronze",
      "year": 2012,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Horseshoes",
      "place": 3,
      "name": "Horseshoes"
    },
    "input": "hshoe.in",
    "output": "hshoe.out",
    "samples": [
      {
        "input": "4\n(())\n()((\n(()(\n))))\n",
        "output": "8\n"
      }
    ]
  },
  "190": {
    "id": 190,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=190",
    "source": {
      "sourceString": "2012 November Silver",
      "year": 2012,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Clumsy Cows",
      "place": 1,
      "name": "Clumsy Cows"
    },
    "input": "clumsy.in",
    "output": "clumsy.out",
    "samples": [
      {
        "input": "())(\n",
        "output": "2\n"
      }
    ]
  },
  "191": {
    "id": 191,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=191",
    "source": {
      "sourceString": "2012 November Silver",
      "year": 2012,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Distant Pastures",
      "place": 2,
      "name": "Distant Pastures"
    },
    "input": "distant.in",
    "output": "distant.out",
    "samples": [
      {
        "input": "3 1 2\n(((\n()(\n(()\n",
        "output": "5\n"
      }
    ]
  },
  "192": {
    "id": 192,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=192",
    "source": {
      "sourceString": "2012 November Silver",
      "year": 2012,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Balanced Cow Breeds",
      "place": 3,
      "name": "Balanced Cow Breeds"
    },
    "input": "bbreeds.in",
    "output": "bbreeds.out",
    "samples": [
      {
        "input": "(())\n",
        "output": "6\n"
      }
    ]
  },
  "193": {
    "id": 193,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=193",
    "source": {
      "sourceString": "2012 November Gold",
      "year": 2012,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Balanced Cow Breeds",
      "place": 1,
      "name": "Balanced Cow Breeds"
    },
    "input": "bbreeds.in",
    "output": "bbreeds.out",
    "samples": [
      {
        "input": "(())\n",
        "output": "6\n"
      }
    ]
  },
  "194": {
    "id": 194,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=194",
    "source": {
      "sourceString": "2012 November Gold",
      "year": 2012,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Concurrently Balanced Strings",
      "place": 2,
      "name": "Concurrently Balanced Strings"
    },
    "input": "cbs.in",
    "output": "cbs.out",
    "samples": [
      {
        "input": "3 14\n)()((())))(())\n()(()()()((())\n)))(()()))(())\n",
        "output": "3\n"
      }
    ]
  },
  "195": {
    "id": 195,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=195",
    "source": {
      "sourceString": "2012 November Gold",
      "year": 2012,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Balanced Trees",
      "place": 3,
      "name": "Balanced Trees"
    },
    "input": "btree.in",
    "output": "btree.out",
    "samples": [
      {
        "input": "15\n1\n2\n1\n4\n4\n6\n7\n5\n9\n9\n11\n12\n13\n14\n(\n)\n)\n(\n)\n)\n(\n)\n(\n(\n(\n)\n)\n)\n(\n",
        "output": "3\n"
      }
    ]
  },
  "205": {
    "id": 205,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=205",
    "source": {
      "sourceString": "2012 December Bronze",
      "year": 2012,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Meet and Greet",
      "place": 1,
      "name": "Meet and Greet"
    },
    "input": "greetings.in",
    "output": "greetings.out",
    "samples": [
      {
        "input": "4 5\n3 L\n5 R\n1 L\n2 R\n4 R\n1 L\n3 L\n4 R\n2 L\n",
        "output": "3\n"
      }
    ]
  },
  "206": {
    "id": 206,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=206",
    "source": {
      "sourceString": "2012 December Bronze",
      "year": 2012,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Scrambled Letters",
      "place": 2,
      "name": "Scrambled Letters"
    },
    "input": "scramble.in",
    "output": "scramble.out",
    "samples": [
      {
        "input": "4\nessieb\na\nxzy\nelsie\n",
        "output": "2 3\n1 1\n4 4\n2 3\n"
      }
    ]
  },
  "207": {
    "id": 207,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=207",
    "source": {
      "sourceString": "2012 December Bronze",
      "year": 2012,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Crazy Fences",
      "place": 3,
      "name": "Crazy Fences"
    },
    "input": "crazy.in",
    "output": "crazy.out",
    "samples": [
      {
        "input": "7 3\n0 0 10 0\n10 0 10 5\n12 5 10 5\n10 5 1 5\n12 5 12 7\n0 7 12 7\n0 7 0 0\n3 4\n6 6\n17 3\n",
        "output": "2\n"
      }
    ]
  },
  "208": {
    "id": 208,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=208",
    "source": {
      "sourceString": "2012 December Silver",
      "year": 2012,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Crazy Fences",
      "place": 1,
      "name": "Crazy Fences"
    },
    "input": "crazy.in",
    "output": "crazy.out",
    "samples": [
      {
        "input": "10 4\n0 0 10 0\n10 0 10 10\n0 0 0 10\n10 10 0 10\n8 8 9 8\n9 8 8 9\n8 9 8 8\n2 7 3 2\n3 2 7 5\n7 5 2 7\n15 3\n1 4\n4 5\n7 1\n",
        "output": "2\n"
      }
    ]
  },
  "209": {
    "id": 209,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=209",
    "source": {
      "sourceString": "2012 December Silver",
      "year": 2012,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Wifi Setup",
      "place": 2,
      "name": "Wifi Setup"
    },
    "input": "wifi.in",
    "output": "wifi.out",
    "samples": [
      {
        "input": "3 20 5\n7\n0\n100\n",
        "output": "57.5\n"
      }
    ]
  },
  "210": {
    "id": 210,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=210",
    "source": {
      "sourceString": "2012 December Silver",
      "year": 2012,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Milk Routing",
      "place": 3,
      "name": "Milk Routing"
    },
    "input": "mroute.in",
    "output": "mroute.out",
    "samples": [
      {
        "input": "3 3 15\n1 2 10 3\n3 2 10 2\n1 3 14 1\n",
        "output": "27\n"
      }
    ]
  },
  "211": {
    "id": 211,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=211",
    "source": {
      "sourceString": "2012 December Gold",
      "year": 2012,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Gangs of Instanbull/Cowstantinople",
      "place": 1,
      "name": "Gangs of Instanbull/Cowstantinople"
    },
    "input": "gangs.in",
    "output": "gangs.out",
    "samples": [
      {
        "input": "5 3\n2\n1\n2\n",
        "output": "YES\n1\n1\n3\n2\n3\n1\n"
      }
    ]
  },
  "212": {
    "id": 212,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=212",
    "source": {
      "sourceString": "2012 December Gold",
      "year": 2012,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. First!",
      "place": 2,
      "name": "First!"
    },
    "input": "first.in",
    "output": "first.out",
    "samples": [
      {
        "input": "4\nomm\nmoo\nmom\nommnom\n",
        "output": "2\nomm\nmom\n"
      }
    ]
  },
  "213": {
    "id": 213,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=213",
    "source": {
      "sourceString": "2012 December Gold",
      "year": 2012,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Running Away From the Barn",
      "place": 3,
      "name": "Running Away From the Barn"
    },
    "input": "runaway.in",
    "output": "runaway.out",
    "samples": [
      {
        "input": "4 5\n1 4\n2 3\n1 5\n",
        "output": "3\n2\n1\n1\n"
      }
    ]
  },
  "223": {
    "id": 223,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=223",
    "source": {
      "sourceString": "2013 January Bronze",
      "year": 2013,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Mirrors",
      "place": 1,
      "name": "Mirrors"
    },
    "input": "mirrors.in",
    "output": "mirrors.out",
    "samples": [
      {
        "input": "5 6 2\n3 0 /\n0 2 /\n1 2 /\n3 2 \\\n1 3 \\\n",
        "output": "4\n"
      }
    ]
  },
  "224": {
    "id": 224,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=224",
    "source": {
      "sourceString": "2013 January Bronze",
      "year": 2013,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Painting the Fence",
      "place": 2,
      "name": "Painting the Fence"
    },
    "input": "paint.in",
    "output": "paint.out",
    "samples": [
      {
        "input": "6\n2 R\n6 L\n1 R\n8 L\n1 R\n2 R\n",
        "output": "6\n"
      }
    ]
  },
  "225": {
    "id": 225,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=225",
    "source": {
      "sourceString": "2013 January Bronze",
      "year": 2013,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Liars and Truth Tellers",
      "place": 3,
      "name": "Liars and Truth Tellers"
    },
    "input": "truth.in",
    "output": "truth.out",
    "samples": [
      {
        "input": "4 3\n1 4 L\n2 3 T\n4 1 T\n",
        "output": "2\n"
      }
    ]
  },
  "226": {
    "id": 226,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=226",
    "source": {
      "sourceString": "2013 January Silver",
      "year": 2013,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Painting the Fence",
      "place": 1,
      "name": "Painting the Fence"
    },
    "input": "paint.in",
    "output": "paint.out",
    "samples": [
      {
        "input": "6 2\n2 R\n6 L\n1 R\n8 L\n1 R\n2 R\n",
        "output": "6\n"
      }
    ]
  },
  "227": {
    "id": 227,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=227",
    "source": {
      "sourceString": "2013 January Silver",
      "year": 2013,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Square Overlap",
      "place": 2,
      "name": "Square Overlap"
    },
    "input": "squares.in",
    "output": "squares.out",
    "samples": [
      {
        "input": "4 6\n0 0\n8 4\n-2 1\n0 7\n",
        "output": "20\n"
      }
    ]
  },
  "228": {
    "id": 228,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=228",
    "source": {
      "sourceString": "2013 January Silver",
      "year": 2013,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Party Invitations",
      "place": 3,
      "name": "Party Invitations"
    },
    "input": "invite.in",
    "output": "invite.out",
    "samples": [
      {
        "input": "10 4\n2 1 3\n2 3 4\n6 1 2 3 4 6 7\n4 4 3 2 1\n",
        "output": "4\n"
      }
    ]
  },
  "229": {
    "id": 229,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=229",
    "source": {
      "sourceString": "2013 January Gold",
      "year": 2013,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Lineup",
      "place": 1,
      "name": "Cow Lineup"
    },
    "input": "lineup.in",
    "output": "lineup.out",
    "samples": [
      {
        "input": "9 1\n2\n7\n3\n7\n7\n3\n7\n5\n7\n",
        "output": "4\n"
      }
    ]
  },
  "230": {
    "id": 230,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=230",
    "source": {
      "sourceString": "2013 January Gold",
      "year": 2013,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Island Travels",
      "place": 2,
      "name": "Island Travels"
    },
    "input": "island.in",
    "output": "island.out",
    "samples": [
      {
        "input": "5 4\nXX.S\n.S..\nSXSS\nS.SX\n..SX\n",
        "output": "3\n"
      }
    ]
  },
  "231": {
    "id": 231,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=231",
    "source": {
      "sourceString": "2013 January Gold",
      "year": 2013,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Seating",
      "place": 3,
      "name": "Seating"
    },
    "input": "seating.in",
    "output": "seating.out",
    "samples": [
      {
        "input": "10 4\nA 6\nL 2 4\nA 5\nA 2\n",
        "output": "1\n"
      }
    ]
  },
  "241": {
    "id": 241,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=241",
    "source": {
      "sourceString": "2013 February Bronze",
      "year": 2013,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Message Relay",
      "place": 1,
      "name": "Message Relay"
    },
    "input": "relay.in",
    "output": "relay.out",
    "samples": [
      {
        "input": "5\n0\n4\n1\n5\n4\n",
        "output": "2\n"
      }
    ]
  },
  "242": {
    "id": 242,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=242",
    "source": {
      "sourceString": "2013 February Bronze",
      "year": 2013,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Crossings",
      "place": 2,
      "name": "Cow Crossings"
    },
    "input": "crossings.in",
    "output": "crossings.out",
    "samples": [
      {
        "input": "4\n-3 4\n7 8\n10 16\n3 9\n",
        "output": "2\n"
      }
    ]
  },
  "243": {
    "id": 243,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=243",
    "source": {
      "sourceString": "2013 February Bronze",
      "year": 2013,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Perimeter",
      "place": 3,
      "name": "Perimeter"
    },
    "input": "perimeter.in",
    "output": "perimeter.out",
    "samples": [
      {
        "input": "8\n5 3\n5 4\n8 4\n5 5\n6 3\n7 3\n7 4\n6 5\n",
        "output": "14\n"
      }
    ]
  },
  "244": {
    "id": 244,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=244",
    "source": {
      "sourceString": "2013 February Silver",
      "year": 2013,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Perimeter",
      "place": 1,
      "name": "Perimeter"
    },
    "input": "perimeter.in",
    "output": "perimeter.out",
    "samples": [
      {
        "input": "8\n10005 200003\n10005 200004\n10008 200004\n10005 200005\n10006 200003\n10007 200003\n10007 200004\n10006 200005\n",
        "output": "14\n"
      }
    ]
  },
  "245": {
    "id": 245,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=245",
    "source": {
      "sourceString": "2013 February Silver",
      "year": 2013,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Tractor",
      "place": 2,
      "name": "Tractor"
    },
    "input": "tractor.in",
    "output": "tractor.out",
    "samples": [
      {
        "input": "5\n0 0 0 3 3\n0 0 0 0 3\n0 9 9 3 3\n9 9 9 3 3\n9 9 9 9 3\n",
        "output": "3\n"
      }
    ]
  },
  "246": {
    "id": 246,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=246",
    "source": {
      "sourceString": "2013 February Silver",
      "year": 2013,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Milk Scheduling",
      "place": 3,
      "name": "Milk Scheduling"
    },
    "input": "msched.in",
    "output": "msched.out",
    "samples": [
      {
        "input": "3 1\n10\n5\n6\n3 2\n",
        "output": "11\n"
      }
    ]
  },
  "247": {
    "id": 247,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=247",
    "source": {
      "sourceString": "2013 February Gold",
      "year": 2013,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Partitioning the Farm",
      "place": 1,
      "name": "Partitioning the Farm"
    },
    "input": "partition.in",
    "output": "partition.out",
    "samples": [
      {
        "input": "3 2\n1 1 2\n1 1 2\n2 2 4\n",
        "output": "4\n"
      }
    ]
  },
  "248": {
    "id": 248,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=248",
    "source": {
      "sourceString": "2013 February Gold",
      "year": 2013,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Taxi",
      "place": 2,
      "name": "Taxi"
    },
    "input": "taxi.in",
    "output": "taxi.out",
    "samples": [
      {
        "input": "2 10\n0 9\n6 5\n",
        "output": "12\n"
      }
    ]
  },
  "249": {
    "id": 249,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=249",
    "source": {
      "sourceString": "2013 February Gold",
      "year": 2013,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Route Design",
      "place": 3,
      "name": "Route Design"
    },
    "input": "route.in",
    "output": "route.out",
    "samples": [
      {
        "input": "3 2 4\n1\n1\n5\n2\n2\n1 1\n2 1\n3 1\n2 2\n",
        "output": "8\n"
      }
    ]
  },
  "259": {
    "id": 259,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=259",
    "source": {
      "sourceString": "2013 March Bronze",
      "year": 2013,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Race",
      "place": 1,
      "name": "Cow Race"
    },
    "input": "cowrace.in",
    "output": "cowrace.out",
    "samples": [
      {
        "input": "4 3\n1 2\n4 1\n1 1\n2 10\n2 3\n1 2\n3 9\n",
        "output": "2\n"
      }
    ]
  },
  "260": {
    "id": 260,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=260",
    "source": {
      "sourceString": "2013 March Bronze",
      "year": 2013,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Breed Proximity",
      "place": 2,
      "name": "Breed Proximity"
    },
    "input": "proximity.in",
    "output": "proximity.out",
    "samples": [
      {
        "input": "6 3\n7\n3\n4\n2\n3\n4\n",
        "output": "4\n"
      }
    ]
  },
  "261": {
    "id": 261,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=261",
    "source": {
      "sourceString": "2013 March Bronze",
      "year": 2013,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Breed Assignment",
      "place": 3,
      "name": "Breed Assignment"
    },
    "input": "assign.in",
    "output": "assign.out",
    "samples": [
      {
        "input": "4 2\nS 1 2\nD 1 3\n",
        "output": "18\n"
      }
    ]
  },
  "262": {
    "id": 262,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=262",
    "source": {
      "sourceString": "2013 March Silver",
      "year": 2013,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Poker Hands",
      "place": 1,
      "name": "Poker Hands"
    },
    "input": "poker.in",
    "output": "poker.out",
    "samples": [
      {
        "input": "5\n2\n4\n1\n2\n3\n",
        "output": "6\n"
      }
    ]
  },
  "263": {
    "id": 263,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=263",
    "source": {
      "sourceString": "2013 March Silver",
      "year": 2013,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Farm Painting",
      "place": 2,
      "name": "Farm Painting"
    },
    "input": "painting.in",
    "output": "painting.out",
    "samples": [
      {
        "input": "3\n2 0 8 9\n10 2 11 3\n4 2 6 5\n",
        "output": "2\n"
      }
    ]
  },
  "264": {
    "id": 264,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=264",
    "source": {
      "sourceString": "2013 March Silver",
      "year": 2013,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The Cow Run",
      "place": 3,
      "name": "The Cow Run"
    },
    "input": "cowrun.in",
    "output": "cowrun.out",
    "samples": [
      {
        "input": "4\n-2\n-12\n3\n7\n",
        "output": "50\n"
      }
    ]
  },
  "265": {
    "id": 265,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=265",
    "source": {
      "sourceString": "2013 March Gold",
      "year": 2013,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. The Cow Run",
      "place": 1,
      "name": "The Cow Run"
    },
    "input": "cowrun.in",
    "output": "cowrun.out",
    "samples": [
      {
        "input": "4\n-2\n-12\n3\n7\n",
        "output": "50\n"
      }
    ]
  },
  "266": {
    "id": 266,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=266",
    "source": {
      "sourceString": "2013 March Gold",
      "year": 2013,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Hill Walk",
      "place": 2,
      "name": "Hill Walk"
    },
    "input": "hillwalk.in",
    "output": "hillwalk.out",
    "samples": [
      {
        "input": "4\n0 0 5 6\n1 0 2 1\n7 2 8 5\n3 0 7 7\n",
        "output": "3\n"
      }
    ]
  },
  "267": {
    "id": 267,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=267",
    "source": {
      "sourceString": "2013 March Gold",
      "year": 2013,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Necklace",
      "place": 3,
      "name": "Necklace"
    },
    "input": "necklace.in",
    "output": "necklace.out",
    "samples": [
      {
        "input": "ababaa\naba\n",
        "output": "1\n"
      }
    ]
  },
  "278": {
    "id": 278,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=278",
    "source": {
      "sourceString": "2013 US Open Bronze",
      "year": 2013,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bovine Ballet",
      "place": 1,
      "name": "Bovine Ballet"
    },
    "input": "ballet.in",
    "output": "ballet.out",
    "samples": [
      {
        "input": "3\nFRF\nFRP\nRLB\n",
        "output": "16\n"
      }
    ]
  },
  "279": {
    "id": 279,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=279",
    "source": {
      "sourceString": "2013 US Open Bronze",
      "year": 2013,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Blink",
      "place": 2,
      "name": "Blink"
    },
    "input": "blink.in",
    "output": "blink.out",
    "samples": [
      {
        "input": "5 6\n1\n0\n0\n0\n0\n",
        "output": "1\n1\n1\n0\n1\n"
      }
    ]
  },
  "280": {
    "id": 280,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=280",
    "source": {
      "sourceString": "2013 US Open Bronze",
      "year": 2013,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Photo",
      "place": 3,
      "name": "Photo"
    },
    "input": "photo.in",
    "output": "photo.out",
    "samples": [
      {
        "input": "7 3\n1 3\n2 4\n5 6\n",
        "output": "3\n"
      }
    ]
  },
  "281": {
    "id": 281,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=281",
    "source": {
      "sourceString": "2013 US Open Bronze",
      "year": 2013,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "4. Haywire",
      "place": 4,
      "name": "Haywire"
    },
    "input": "haywire.in",
    "output": "haywire.out",
    "samples": [
      {
        "input": "6\n6 2 5\n1 3 4\n4 2 6\n5 3 2\n4 6 1\n1 5 3\n",
        "output": "17\n"
      }
    ]
  },
  "282": {
    "id": 282,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=282",
    "source": {
      "sourceString": "2013 US Open Silver",
      "year": 2013,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. What's Up With Gravity",
      "place": 1,
      "name": "What's Up With Gravity"
    },
    "input": "gravity.in",
    "output": "gravity.out",
    "samples": [
      {
        "input": "5 5\n#####\n#...#\n#...D\n#C...\n##.##\n",
        "output": "3\n"
      }
    ]
  },
  "283": {
    "id": 283,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=283",
    "source": {
      "sourceString": "2013 US Open Silver",
      "year": 2013,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Fuel Economy",
      "place": 2,
      "name": "Fuel Economy"
    },
    "input": "fuel.in",
    "output": "fuel.out",
    "samples": [
      {
        "input": "4 10 3 17\n2 40\n9 15\n5 7\n10 12\n",
        "output": "174\n"
      }
    ]
  },
  "284": {
    "id": 284,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=284",
    "source": {
      "sourceString": "2013 US Open Silver",
      "year": 2013,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Luxury River Cruise",
      "place": 3,
      "name": "Luxury River Cruise"
    },
    "input": "cruise.in",
    "output": "cruise.out",
    "samples": [
      {
        "input": "4 3 3\n2 4\n3 1\n4 2\n1 3\nL L R\n",
        "output": "4\n"
      }
    ]
  },
  "285": {
    "id": 285,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=285",
    "source": {
      "sourceString": "2013 US Open Gold",
      "year": 2013,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Photo",
      "place": 1,
      "name": "Photo"
    },
    "input": "photo.in",
    "output": "photo.out",
    "samples": [
      {
        "input": "5 3\n1 4\n2 5\n3 4\n",
        "output": "1\n"
      }
    ]
  },
  "286": {
    "id": 286,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=286",
    "source": {
      "sourceString": "2013 US Open Gold",
      "year": 2013,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Yin and Yang",
      "place": 2,
      "name": "Yin and Yang"
    },
    "input": "yinyang.in",
    "output": "yinyang.out",
    "samples": [
      {
        "input": "7\n1 2 0\n3 1 1\n2 4 0\n5 2 0\n6 3 1\n5 7 1\n",
        "output": "1\n"
      }
    ]
  },
  "287": {
    "id": 287,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=287",
    "source": {
      "sourceString": "2013 US Open Gold",
      "year": 2013,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Figure Eight",
      "place": 3,
      "name": "Figure Eight"
    },
    "input": "eight.in",
    "output": "eight.out",
    "samples": [
      {
        "input": "15\n...............\n...............\n...*******.....\n.*....*.......*\n.*......*....*.\n....*..........\n...*...****....\n...............\n..**.*..*..*...\n...*...**.*....\n*..*...*.......\n...............\n.....*..*......\n.........*.....\n...............\n",
        "output": "3888\n"
      }
    ]
  },
  "340": {
    "id": 340,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=340",
    "source": {
      "sourceString": "2013 November Bronze",
      "year": 2013,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Combination Lock",
      "place": 1,
      "name": "Combination Lock"
    },
    "input": "combo.in",
    "output": "combo.out",
    "samples": [
      {
        "input": "50\n1 2 3\n5 6 7\n",
        "output": "249\n"
      }
    ]
  },
  "341": {
    "id": 341,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=341",
    "source": {
      "sourceString": "2013 November Bronze",
      "year": 2013,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Goldilocks and the N Cows",
      "place": 2,
      "name": "Goldilocks and the N Cows"
    },
    "input": "milktemp.in",
    "output": "milktemp.out",
    "samples": [
      {
        "input": "4 7 9 6\n5 8\n3 4\n13 20\n7 10\n",
        "output": "31\n"
      }
    ]
  },
  "342": {
    "id": 342,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=342",
    "source": {
      "sourceString": "2013 November Bronze",
      "year": 2013,
      "contest": "November",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Farmer John has no Large Brown Cow",
      "place": 3,
      "name": "Farmer John has no Large Brown Cow"
    },
    "input": "nocow.in",
    "output": "nocow.out",
    "samples": [
      {
        "input": "3 7\nFarmer John has no large brown noisy cow.\nFarmer John has no small white silent cow.\nFarmer John has no large spotted noisy cow.\n",
        "output": "small spotted noisy\n"
      }
    ]
  },
  "343": {
    "id": 343,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=343",
    "source": {
      "sourceString": "2013 November Silver",
      "year": 2013,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Farmer John has no Large Brown Cow",
      "place": 1,
      "name": "Farmer John has no Large Brown Cow"
    },
    "input": "nocow.in",
    "output": "nocow.out",
    "samples": [
      {
        "input": "3 7\nFarmer John has no large brown noisy cow.\nFarmer John has no small white silent cow.\nFarmer John has no large spotted noisy cow.\n",
        "output": "small spotted noisy\n"
      }
    ]
  },
  "344": {
    "id": 344,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=344",
    "source": {
      "sourceString": "2013 November Silver",
      "year": 2013,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Crowded Cows",
      "place": 2,
      "name": "Crowded Cows"
    },
    "input": "crowded.in",
    "output": "crowded.out",
    "samples": [
      {
        "input": "6 4\n10 3\n6 2\n5 3\n9 7\n3 6\n11 2\n",
        "output": "2\n"
      }
    ]
  },
  "345": {
    "id": 345,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=345",
    "source": {
      "sourceString": "2013 November Silver",
      "year": 2013,
      "contest": "November",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Pogo-Cow",
      "place": 3,
      "name": "Pogo-Cow"
    },
    "input": "pogocow.in",
    "output": "pogocow.out",
    "samples": [
      {
        "input": "6\n5 6\n1 1\n10 5\n7 6\n4 8\n8 10\n",
        "output": "25\n"
      }
    ]
  },
  "346": {
    "id": 346,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=346",
    "source": {
      "sourceString": "2013 November Gold",
      "year": 2013,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Empty Stalls",
      "place": 1,
      "name": "Empty Stalls"
    },
    "input": "empty.in",
    "output": "empty.out",
    "samples": [
      {
        "input": "10 3\n3 2 2 4\n2 1 0 1\n1 1 1 7\n",
        "output": "5\n"
      }
    ]
  },
  "347": {
    "id": 347,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=347",
    "source": {
      "sourceString": "2013 November Gold",
      "year": 2013,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Line of Sight",
      "place": 2,
      "name": "Line of Sight"
    },
    "input": "sight.in",
    "output": "sight.out",
    "samples": [
      {
        "input": "4 5\n0 10\n0 -10\n10 0\n-10 0\n",
        "output": "4\n"
      }
    ]
  },
  "348": {
    "id": 348,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=348",
    "source": {
      "sourceString": "2013 November Gold",
      "year": 2013,
      "contest": "November",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. No Change",
      "place": 3,
      "name": "No Change"
    },
    "input": "nochange.in",
    "output": "nochange.out",
    "samples": [
      {
        "input": "3 6\n12\n15\n10\n6\n3\n3\n2\n3\n7\n",
        "output": "12\n"
      }
    ]
  },
  "358": {
    "id": 358,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=358",
    "source": {
      "sourceString": "2013 December Bronze",
      "year": 2013,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Record Keeping",
      "place": 1,
      "name": "Record Keeping"
    },
    "input": "records.in",
    "output": "records.out",
    "samples": [
      {
        "input": "5\nBESSIE ELSIE MATILDA\nFRAN BESSIE INGRID\nBESSIE ELSIE MATILDA\nMATILDA INGRID FRAN\nELSIE BESSIE MATILDA\n",
        "output": "3\n"
      }
    ]
  },
  "359": {
    "id": 359,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=359",
    "source": {
      "sourceString": "2013 December Bronze",
      "year": 2013,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Baseball",
      "place": 2,
      "name": "Cow Baseball"
    },
    "input": "baseball.in",
    "output": "baseball.out",
    "samples": [
      {
        "input": "5\n3\n1\n10\n7\n4\n",
        "output": "4\n"
      }
    ]
  },
  "360": {
    "id": 360,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=360",
    "source": {
      "sourceString": "2013 December Bronze",
      "year": 2013,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Wormholes",
      "place": 3,
      "name": "Wormholes"
    },
    "input": "wormhole.in",
    "output": "wormhole.out",
    "samples": [
      {
        "input": "4\n0 0\n1 0\n1 1\n0 1\n",
        "output": "2\n"
      }
    ]
  },
  "361": {
    "id": 361,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=361",
    "source": {
      "sourceString": "2013 December Silver",
      "year": 2013,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Milk Scheduling",
      "place": 1,
      "name": "Milk Scheduling"
    },
    "input": "msched.in",
    "output": "msched.out",
    "samples": [
      {
        "input": "4\n10 3\n7 5\n8 1\n2 1\n",
        "output": "25\n"
      }
    ]
  },
  "362": {
    "id": 362,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=362",
    "source": {
      "sourceString": "2013 December Silver",
      "year": 2013,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Vacation Planning",
      "place": 2,
      "name": "Vacation Planning"
    },
    "input": "vacation.in",
    "output": "vacation.out",
    "samples": [
      {
        "input": "3 3 1 3\n3 1 10\n1 3 10\n1 2 7\n3 2\n2 3\n1 2\n",
        "output": "2\n24\n"
      }
    ]
  },
  "363": {
    "id": 363,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=363",
    "source": {
      "sourceString": "2013 December Silver",
      "year": 2013,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The Bessie Shuffle",
      "place": 3,
      "name": "The Bessie Shuffle"
    },
    "input": "shuffle.in",
    "output": "shuffle.out",
    "samples": [
      {
        "input": "5 3 5\n3\n1\n2\n1\n2\n3\n4\n5\n",
        "output": "4\n5\n3\n1\n2\n"
      }
    ]
  },
  "364": {
    "id": 364,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=364",
    "source": {
      "sourceString": "2013 December Gold",
      "year": 2013,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Vacation Planning (gold)",
      "place": 1,
      "name": "Vacation Planning (gold)"
    },
    "input": "vacationgold.in",
    "output": "vacationgold.out",
    "samples": [
      {
        "input": "3 3 1 2\n1 2 10\n2 3 10\n2 1 5\n2\n1 3\n3 1\n",
        "output": "1\n20\n"
      }
    ]
  },
  "365": {
    "id": 365,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=365",
    "source": {
      "sourceString": "2013 December Gold",
      "year": 2013,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Optimal Milking",
      "place": 2,
      "name": "Optimal Milking"
    },
    "input": "optmilk.in",
    "output": "optmilk.out",
    "samples": [
      {
        "input": "5 3\n1\n2\n3\n4\n5\n5 2\n2 7\n1 10\n",
        "output": "32\n"
      }
    ]
  },
  "366": {
    "id": 366,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=366",
    "source": {
      "sourceString": "2013 December Gold",
      "year": 2013,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The Bessie Shuffle (gold)",
      "place": 3,
      "name": "The Bessie Shuffle (gold)"
    },
    "input": "shufflegold.in",
    "output": "shufflegold.out",
    "samples": [
      {
        "input": "5 3 5\n3\n1\n2\n1\n2\n3\n4\n5\n",
        "output": "4\n5\n3\n1\n2\n"
      }
    ]
  },
  "376": {
    "id": 376,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=376",
    "source": {
      "sourceString": "2014 January Bronze",
      "year": 2014,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Ski Course Design",
      "place": 1,
      "name": "Ski Course Design"
    },
    "input": "skidesign.in",
    "output": "skidesign.out",
    "samples": [
      {
        "input": "5\n20\n4\n1\n24\n21\n",
        "output": "18\n"
      }
    ]
  },
  "377": {
    "id": 377,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=377",
    "source": {
      "sourceString": "2014 January Bronze",
      "year": 2014,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Bessie Slows Down",
      "place": 2,
      "name": "Bessie Slows Down"
    },
    "input": "slowdown.in",
    "output": "slowdown.out",
    "samples": [
      {
        "input": "2\nT 30\nD 10\n",
        "output": "2970\n"
      }
    ]
  },
  "378": {
    "id": 378,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=378",
    "source": {
      "sourceString": "2014 January Bronze",
      "year": 2014,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Balanced Teams",
      "place": 3,
      "name": "Balanced Teams"
    },
    "input": "bteams.in",
    "output": "bteams.out",
    "samples": [
      {
        "input": "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n",
        "output": "1\n"
      }
    ]
  },
  "379": {
    "id": 379,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=379",
    "source": {
      "sourceString": "2014 January Silver",
      "year": 2014,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bessie Slows Down",
      "place": 1,
      "name": "Bessie Slows Down"
    },
    "input": "slowdown.in",
    "output": "slowdown.out",
    "samples": [
      {
        "input": "2\nT 30\nD 10\n",
        "output": "2970\n"
      }
    ]
  },
  "380": {
    "id": 380,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=380",
    "source": {
      "sourceString": "2014 January Silver",
      "year": 2014,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cross Country Skiing",
      "place": 2,
      "name": "Cross Country Skiing"
    },
    "input": "ccski.in",
    "output": "ccski.out",
    "samples": [
      {
        "input": "3 5\n20 21 18 99 5\n19 22 20 16 26\n18 17 40 60 80\n1 0 0 0 1\n0 0 0 0 0\n0 0 0 0 1\n",
        "output": "21\n"
      }
    ]
  },
  "381": {
    "id": 381,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=381",
    "source": {
      "sourceString": "2014 January Silver",
      "year": 2014,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Recording the Moolympics",
      "place": 3,
      "name": "Recording the Moolympics"
    },
    "input": "recording.in",
    "output": "recording.out",
    "samples": [
      {
        "input": "6\n0 3\n6 7\n3 10\n1 5\n2 8\n1 9\n",
        "output": "4\n"
      }
    ]
  },
  "382": {
    "id": 382,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=382",
    "source": {
      "sourceString": "2014 January Gold",
      "year": 2014,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Curling",
      "place": 1,
      "name": "Cow Curling"
    },
    "input": "curling.in",
    "output": "curling.out",
    "samples": [
      {
        "input": "4\n0 0\n0 2\n2 0\n2 2\n1 1\n1 10\n-10 3\n10 3\n",
        "output": "1 2\n"
      }
    ]
  },
  "383": {
    "id": 383,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=383",
    "source": {
      "sourceString": "2014 January Gold",
      "year": 2014,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Building a Ski Course",
      "place": 2,
      "name": "Building a Ski Course"
    },
    "input": "skicourse.in",
    "output": "skicourse.out",
    "samples": [
      {
        "input": "3 6\nRSRSSS\nRSRSSS\nRSRSSS\n",
        "output": "3\n"
      }
    ]
  },
  "384": {
    "id": 384,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=384",
    "source": {
      "sourceString": "2014 January Gold",
      "year": 2014,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Ski Course Rating",
      "place": 3,
      "name": "Ski Course Rating"
    },
    "input": "skilevel.in",
    "output": "skilevel.out",
    "samples": [
      {
        "input": "3 5 10\n20 21 18 99 5\n19 22 20 16 17\n18 17 40 60 80\n1 0 0 0 0\n0 0 0 0 0\n0 0 0 0 1\n",
        "output": "24\n"
      }
    ]
  },
  "394": {
    "id": 394,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=394",
    "source": {
      "sourceString": "2014 February Bronze",
      "year": 2014,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Mirror Field",
      "place": 1,
      "name": "Mirror Field"
    },
    "input": "mirror.in",
    "output": "mirror.out",
    "samples": [
      {
        "input": "3 3\n/\\\\\n\\\\\\\n/\\/\n",
        "output": "3\n"
      }
    ]
  },
  "395": {
    "id": 395,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=395",
    "source": {
      "sourceString": "2014 February Bronze",
      "year": 2014,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Auto-Complete",
      "place": 2,
      "name": "Auto-Complete"
    },
    "input": "auto.in",
    "output": "auto.out",
    "samples": [
      {
        "input": "10 3\ndab\nba\nab\ndaa\naa\naaa\naab\nabc\nac\ndadba\n4 a\n2 da\n4 da\n",
        "output": "3\n1\n-1\n"
      }
    ]
  },
  "396": {
    "id": 396,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=396",
    "source": {
      "sourceString": "2014 February Bronze",
      "year": 2014,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Secret Code",
      "place": 3,
      "name": "Secret Code"
    },
    "input": "scode.in",
    "output": "scode.out",
    "samples": [
      {
        "input": "ABABA\n",
        "output": "6\n"
      }
    ]
  },
  "397": {
    "id": 397,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=397",
    "source": {
      "sourceString": "2014 February Silver",
      "year": 2014,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Auto-Complete",
      "place": 1,
      "name": "Auto-Complete"
    },
    "input": "auto.in",
    "output": "auto.out",
    "samples": [
      {
        "input": "10 3\ndab\nba\nab\ndaa\naa\naaa\naab\nabc\nac\ndadba\n4 a\n2 da\n4 da\n",
        "output": "3\n1\n-1\n"
      }
    ]
  },
  "398": {
    "id": 398,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=398",
    "source": {
      "sourceString": "2014 February Silver",
      "year": 2014,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Roadblock",
      "place": 2,
      "name": "Roadblock"
    },
    "input": "rblock.in",
    "output": "rblock.out",
    "samples": [
      {
        "input": "5 7\n2 1 5\n1 3 1\n3 2 8\n3 5 7\n3 4 3\n2 4 7\n4 5 2\n",
        "output": "2\n"
      }
    ]
  },
  "399": {
    "id": 399,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=399",
    "source": {
      "sourceString": "2014 February Silver",
      "year": 2014,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Secret Code",
      "place": 3,
      "name": "Secret Code"
    },
    "input": "scode.in",
    "output": "scode.out",
    "samples": [
      {
        "input": "ABABA\n",
        "output": "8\n"
      }
    ]
  },
  "400": {
    "id": 400,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=400",
    "source": {
      "sourceString": "2014 February Gold",
      "year": 2014,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Roadblock",
      "place": 1,
      "name": "Roadblock"
    },
    "input": "rblock.in",
    "output": "rblock.out",
    "samples": [
      {
        "input": "5 7\n2 1 5\n1 3 1\n3 2 8\n3 5 7\n3 4 3\n2 4 7\n4 5 2\n",
        "output": "2\n"
      }
    ]
  },
  "401": {
    "id": 401,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=401",
    "source": {
      "sourceString": "2014 February Gold",
      "year": 2014,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Decathlon",
      "place": 2,
      "name": "Cow Decathlon"
    },
    "input": "dec.in",
    "output": "dec.out",
    "samples": [
      {
        "input": "3 1\n2 7 6\n5 1 7\n2 2 4\n4 2 1\n",
        "output": "17\n"
      }
    ]
  },
  "402": {
    "id": 402,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=402",
    "source": {
      "sourceString": "2014 February Gold",
      "year": 2014,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Airplane Boarding",
      "place": 3,
      "name": "Airplane Boarding"
    },
    "input": "boarding.in",
    "output": "boarding.out",
    "samples": [
      {
        "input": "3\n2 5\n3 10\n1 5\n",
        "output": "19\n"
      }
    ]
  },
  "412": {
    "id": 412,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=412",
    "source": {
      "sourceString": "2014 March Bronze",
      "year": 2014,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Reordering the Cows",
      "place": 1,
      "name": "Reordering the Cows"
    },
    "input": "reorder.in",
    "output": "reorder.out",
    "samples": [
      {
        "input": "5\n5\n1\n4\n2\n3\n2\n5\n3\n1\n4\n",
        "output": "2 3\n"
      }
    ]
  },
  "413": {
    "id": 413,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=413",
    "source": {
      "sourceString": "2014 March Bronze",
      "year": 2014,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. The Lazy Cow",
      "place": 2,
      "name": "The Lazy Cow"
    },
    "input": "lazy.in",
    "output": "lazy.out",
    "samples": [
      {
        "input": "4 3\n4 7\n10 15\n2 2\n5 1\n",
        "output": "11\n"
      }
    ]
  },
  "414": {
    "id": 414,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=414",
    "source": {
      "sourceString": "2014 March Bronze",
      "year": 2014,
      "contest": "March",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Art",
      "place": 3,
      "name": "Cow Art"
    },
    "input": "cowart.in",
    "output": "cowart.out",
    "samples": [
      {
        "input": "5\nRRRBB\nGGBBB\nBBBRR\nBBRRR\nRRRRR\n",
        "output": "4 3\n"
      }
    ]
  },
  "415": {
    "id": 415,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=415",
    "source": {
      "sourceString": "2014 March Silver",
      "year": 2014,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Watering the Fields",
      "place": 1,
      "name": "Watering the Fields"
    },
    "input": "irrigation.in",
    "output": "irrigation.out",
    "samples": [
      {
        "input": "3 11\n0 2\n5 0\n4 3\n",
        "output": "46\n"
      }
    ]
  },
  "416": {
    "id": 416,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=416",
    "source": {
      "sourceString": "2014 March Silver",
      "year": 2014,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. The Lazy Cow",
      "place": 2,
      "name": "The Lazy Cow"
    },
    "input": "lazy.in",
    "output": "lazy.out",
    "samples": [
      {
        "input": "5 2\n50 5 25 6 17\n14 3 2 7 21\n99 10 1 2 80\n8 7 5 23 11\n10 0 78 1 9\n",
        "output": "342\n"
      }
    ]
  },
  "417": {
    "id": 417,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=417",
    "source": {
      "sourceString": "2014 March Silver",
      "year": 2014,
      "contest": "March",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Mooo Moo",
      "place": 3,
      "name": "Mooo Moo"
    },
    "input": "mooomoo.in",
    "output": "mooomoo.out",
    "samples": [
      {
        "input": "5 2\n5\n7\n0\n17\n16\n20\n19\n",
        "output": "4\n"
      }
    ]
  },
  "418": {
    "id": 418,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=418",
    "source": {
      "sourceString": "2014 March Gold",
      "year": 2014,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. The Lazy Cow",
      "place": 1,
      "name": "The Lazy Cow"
    },
    "input": "lazy.in",
    "output": "lazy.out",
    "samples": [
      {
        "input": "4 3\n7 8 6\n3 0 0\n4 6 0\n1 4 2\n",
        "output": "8\n"
      }
    ]
  },
  "419": {
    "id": 419,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=419",
    "source": {
      "sourceString": "2014 March Gold",
      "year": 2014,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Sabotage",
      "place": 2,
      "name": "Sabotage"
    },
    "input": "sabotage.in",
    "output": "sabotage.out",
    "samples": [
      {
        "input": "5\n5\n1\n7\n8\n2\n",
        "output": "2.667\n"
      }
    ]
  },
  "420": {
    "id": 420,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=420",
    "source": {
      "sourceString": "2014 March Gold",
      "year": 2014,
      "contest": "March",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Counting Friends",
      "place": 3,
      "name": "Counting Friends"
    },
    "input": "fcount.in",
    "output": "fcount.out",
    "samples": [
      {
        "input": "4\n1\n2\n2\n1\n3\n",
        "output": "3\n1\n4\n5\n"
      }
    ]
  },
  "430": {
    "id": 430,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=430",
    "source": {
      "sourceString": "2014 US Open Bronze",
      "year": 2014,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Odometer",
      "place": 1,
      "name": "Odometer"
    },
    "input": "odometer.in",
    "output": "odometer.out",
    "samples": [
      {
        "input": "110 133\n",
        "output": "13\n"
      }
    ]
  },
  "431": {
    "id": 431,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=431",
    "source": {
      "sourceString": "2014 US Open Bronze",
      "year": 2014,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Fair Photography",
      "place": 2,
      "name": "Fair Photography"
    },
    "input": "fairphoto.in",
    "output": "fairphoto.out",
    "samples": [
      {
        "input": "6\n4 G\n10 H\n7 G\n16 G\n1 G\n3 H\n",
        "output": "7\n"
      }
    ]
  },
  "432": {
    "id": 432,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=432",
    "source": {
      "sourceString": "2014 US Open Bronze",
      "year": 2014,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Decorating the Pastures",
      "place": 3,
      "name": "Decorating the Pastures"
    },
    "input": "decorate.in",
    "output": "decorate.out",
    "samples": [
      {
        "input": "4 4\n1 2\n2 3\n3 4\n4 1\n",
        "output": "2\n"
      }
    ]
  },
  "433": {
    "id": 433,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=433",
    "source": {
      "sourceString": "2014 US Open Silver",
      "year": 2014,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Fair Photography",
      "place": 1,
      "name": "Fair Photography"
    },
    "input": "fairphoto.in",
    "output": "fairphoto.out",
    "samples": [
      {
        "input": "5\n8 W\n11 S\n3 W\n10 W\n5 S\n",
        "output": "7\n"
      }
    ]
  },
  "434": {
    "id": 434,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=434",
    "source": {
      "sourceString": "2014 US Open Silver",
      "year": 2014,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Dueling GPSs",
      "place": 2,
      "name": "Dueling GPSs"
    },
    "input": "gpsduel.in",
    "output": "gpsduel.out",
    "samples": [
      {
        "input": "5 7\n3 4 7 1\n1 3 2 20\n1 4 17 18\n4 5 25 3\n1 2 10 1\n3 5 4 14\n2 4 6 5\n",
        "output": "1\n"
      }
    ]
  },
  "435": {
    "id": 435,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=435",
    "source": {
      "sourceString": "2014 US Open Silver",
      "year": 2014,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Odometer",
      "place": 3,
      "name": "Odometer"
    },
    "input": "odometer.in",
    "output": "odometer.out",
    "samples": [
      {
        "input": "110 133\n",
        "output": "14\n"
      }
    ]
  },
  "436": {
    "id": 436,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=436",
    "source": {
      "sourceString": "2014 US Open Gold",
      "year": 2014,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Fair Photography",
      "place": 1,
      "name": "Fair Photography"
    },
    "input": "fairphoto.in",
    "output": "fairphoto.out",
    "samples": [
      {
        "input": "9 2\n1 1\n5 1\n6 1\n9 1\n100 1\n2 2\n7 2\n3 3\n8 3\n",
        "output": "6\n"
      }
    ]
  },
  "437": {
    "id": 437,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=437",
    "source": {
      "sourceString": "2014 US Open Gold",
      "year": 2014,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Optics",
      "place": 2,
      "name": "Cow Optics"
    },
    "input": "optics.in",
    "output": "optics.out",
    "samples": [
      {
        "input": "4 1 2\n-2 1 \\\n2 1 /\n2 2 \\\n-2 2 /\n",
        "output": "2\n"
      }
    ]
  },
  "438": {
    "id": 438,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=438",
    "source": {
      "sourceString": "2014 US Open Gold",
      "year": 2014,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Code Breaking",
      "place": 3,
      "name": "Code Breaking"
    },
    "input": "code.in",
    "output": "code.out",
    "samples": [
      {
        "input": "6 2\n0\n1\n2\n3\n3\n4 01234\n5 91234\n",
        "output": "19\n"
      }
    ]
  },
  "487": {
    "id": 487,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=487",
    "source": {
      "sourceString": "2014 December Bronze",
      "year": 2014,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Marathon",
      "place": 1,
      "name": "Marathon"
    },
    "input": "marathon.in",
    "output": "marathon.out",
    "samples": [
      {
        "input": "4\n0 0\n8 3\n11 -1\n10 0\n",
        "output": "14\n"
      }
    ]
  },
  "488": {
    "id": 488,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=488",
    "source": {
      "sourceString": "2014 December Bronze",
      "year": 2014,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Crosswords",
      "place": 2,
      "name": "Crosswords"
    },
    "input": "crosswords.in",
    "output": "crosswords.out",
    "samples": [
      {
        "input": "5 3\n...\n#..\n...\n..#\n.##\n",
        "output": "4\n1 1\n1 2\n1 3\n3 1\n"
      }
    ]
  },
  "489": {
    "id": 489,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=489",
    "source": {
      "sourceString": "2014 December Bronze",
      "year": 2014,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Jog",
      "place": 3,
      "name": "Cow Jog"
    },
    "input": "cowjog.in",
    "output": "cowjog.out",
    "samples": [
      {
        "input": "5\n0 1\n1 2\n2 3\n3 2\n6 1\n",
        "output": "2\n"
      }
    ]
  },
  "490": {
    "id": 490,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=490",
    "source": {
      "sourceString": "2014 December Bronze",
      "year": 2014,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "4. Learning by Example",
      "place": 4,
      "name": "Learning by Example"
    },
    "input": "learning.in",
    "output": "learning.out",
    "samples": [
      {
        "input": "3 1 10\nS 10\nNS 4\nS 1\n",
        "output": "6\n"
      }
    ]
  },
  "491": {
    "id": 491,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=491",
    "source": {
      "sourceString": "2014 December Silver",
      "year": 2014,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Piggyback",
      "place": 1,
      "name": "Piggyback"
    },
    "input": "piggyback.in",
    "output": "piggyback.out",
    "samples": [
      {
        "input": "4 4 5 8 8\n1 4\n2 3\n3 4\n4 7\n2 5\n5 6\n6 8\n7 8\n",
        "output": "22\n"
      }
    ]
  },
  "492": {
    "id": 492,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=492",
    "source": {
      "sourceString": "2014 December Silver",
      "year": 2014,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Marathon",
      "place": 2,
      "name": "Marathon"
    },
    "input": "marathon.in",
    "output": "marathon.out",
    "samples": [
      {
        "input": "5 2\n0 0\n8 3\n1 1\n10 -5\n2 2\n",
        "output": "4\n"
      }
    ]
  },
  "493": {
    "id": 493,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=493",
    "source": {
      "sourceString": "2014 December Silver",
      "year": 2014,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Jog",
      "place": 3,
      "name": "Cow Jog"
    },
    "input": "cowjog.in",
    "output": "cowjog.out",
    "samples": [
      {
        "input": "5 3\n0 1\n1 2\n2 3\n3 2\n6 1\n",
        "output": "3\n"
      }
    ]
  },
  "494": {
    "id": 494,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=494",
    "source": {
      "sourceString": "2014 December Gold",
      "year": 2014,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Guard Mark",
      "place": 1,
      "name": "Guard Mark"
    },
    "input": "guard.in",
    "output": "guard.out",
    "samples": [
      {
        "input": "4 10\n9 4 1\n3 3 5\n5 5 10\n4 4 5\n",
        "output": "2\n"
      }
    ]
  },
  "495": {
    "id": 495,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=495",
    "source": {
      "sourceString": "2014 December Gold",
      "year": 2014,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Marathon",
      "place": 2,
      "name": "Marathon"
    },
    "input": "marathon.in",
    "output": "marathon.out",
    "samples": [
      {
        "input": "5 5\n-4 4\n-5 -3\n-1 5\n-3 4\n0 5\nQ 1 5\nU 4 0 1\nU 4 -1 1\nQ 2 4\nQ 1 4\n",
        "output": "11\n8\n8\n"
      }
    ]
  },
  "496": {
    "id": 496,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=496",
    "source": {
      "sourceString": "2014 December Gold",
      "year": 2014,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Jog",
      "place": 3,
      "name": "Cow Jog"
    },
    "input": "cowjog.in",
    "output": "cowjog.out",
    "samples": [
      {
        "input": "5 3\n0 1\n1 2\n2 3\n3 2\n6 1\n",
        "output": "3\n"
      }
    ]
  },
  "507": {
    "id": 507,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=507",
    "source": {
      "sourceString": "2015 January Bronze",
      "year": 2015,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Routing",
      "place": 1,
      "name": "Cow Routing"
    },
    "input": "cowroute.in",
    "output": "cowroute.out",
    "samples": [
      {
        "input": "1 2 3\n3 3\n3 2 1\n4 4\n2 1 4 3\n8 5\n4 1 7 8 2\n",
        "output": "8\n"
      }
    ]
  },
  "508": {
    "id": 508,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=508",
    "source": {
      "sourceString": "2015 January Bronze",
      "year": 2015,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Routing II",
      "place": 2,
      "name": "Cow Routing II"
    },
    "input": "cowroute.in",
    "output": "cowroute.out",
    "samples": [
      {
        "input": "1 2 3\n3 3\n3 2 1\n4 4\n2 1 4 3\n8 5\n4 1 7 8 2\n",
        "output": "7\n"
      }
    ]
  },
  "509": {
    "id": 509,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=509",
    "source": {
      "sourceString": "2015 January Bronze",
      "year": 2015,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. It's All About the Base",
      "place": 3,
      "name": "It's All About the Base"
    },
    "input": "whatbase.in",
    "output": "whatbase.out",
    "samples": [
      {
        "input": "1\n419 792\n",
        "output": "47 35\n"
      }
    ]
  },
  "510": {
    "id": 510,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=510",
    "source": {
      "sourceString": "2015 January Bronze",
      "year": 2015,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "4. Meeting Time",
      "place": 4,
      "name": "Meeting Time"
    },
    "input": "meeting.in",
    "output": "meeting.out",
    "samples": [
      {
        "input": "3 3\n1 3 1 2\n1 2 1 2\n2 3 1 2\n",
        "output": "2\n"
      }
    ]
  },
  "511": {
    "id": 511,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=511",
    "source": {
      "sourceString": "2015 January Silver",
      "year": 2015,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Stampede",
      "place": 1,
      "name": "Stampede"
    },
    "input": "stampede.in",
    "output": "stampede.out",
    "samples": [
      {
        "input": "3\n-2 1 3\n-3 2 3\n-5 100 1\n",
        "output": "2\n"
      }
    ]
  },
  "512": {
    "id": 512,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=512",
    "source": {
      "sourceString": "2015 January Silver",
      "year": 2015,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Routing",
      "place": 2,
      "name": "Cow Routing"
    },
    "input": "cowroute.in",
    "output": "cowroute.out",
    "samples": [
      {
        "input": "3 4 3\n3 5\n1 2 3 4 5\n2 3\n3 5 4\n1 2\n1 5\n",
        "output": "2 2\n"
      }
    ]
  },
  "513": {
    "id": 513,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=513",
    "source": {
      "sourceString": "2015 January Silver",
      "year": 2015,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Meeting Time",
      "place": 3,
      "name": "Meeting Time"
    },
    "input": "meeting.in",
    "output": "meeting.out",
    "samples": [
      {
        "input": "3 3\n1 3 1 2\n1 2 1 2\n2 3 1 2\n",
        "output": "2\n"
      }
    ]
  },
  "514": {
    "id": 514,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=514",
    "source": {
      "sourceString": "2015 January Gold",
      "year": 2015,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Rectangles",
      "place": 1,
      "name": "Cow Rectangles"
    },
    "input": "cowrect.in",
    "output": "cowrect.out",
    "samples": [
      {
        "input": "5\n1 1 H\n2 2 H\n3 3 G\n4 4 H\n6 6 H\n",
        "output": "2\n1\n"
      }
    ]
  },
  "515": {
    "id": 515,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=515",
    "source": {
      "sourceString": "2015 January Gold",
      "year": 2015,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Moovie Mooving",
      "place": 2,
      "name": "Moovie Mooving"
    },
    "input": "movie.in",
    "output": "movie.out",
    "samples": [
      {
        "input": "4 100\n50 3 15 30 55\n40 2 0 65\n30 2 20 90\n20 1 0\n",
        "output": "3\n"
      }
    ]
  },
  "516": {
    "id": 516,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=516",
    "source": {
      "sourceString": "2015 January Gold",
      "year": 2015,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Grass Cownoisseur",
      "place": 3,
      "name": "Grass Cownoisseur"
    },
    "input": "grass.in",
    "output": "grass.out",
    "samples": [
      {
        "input": "7 10\n1 2\n3 1\n2 5\n2 4\n3 7\n3 5\n3 6\n6 5\n7 2\n4 7\n",
        "output": "6\n"
      }
    ]
  },
  "526": {
    "id": 526,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=526",
    "source": {
      "sourceString": "2015 February Bronze",
      "year": 2015,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Censoring (Bronze)",
      "place": 1,
      "name": "Censoring (Bronze)"
    },
    "input": "censor.in",
    "output": "censor.out",
    "samples": [
      {
        "input": "whatthemomooofun\nmoo\n",
        "output": "whatthefun\n"
      }
    ]
  },
  "527": {
    "id": 527,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=527",
    "source": {
      "sourceString": "2015 February Bronze",
      "year": 2015,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. COW",
      "place": 2,
      "name": "COW"
    },
    "input": "cow.in",
    "output": "cow.out",
    "samples": [
      {
        "input": "6\nCOOWWW\n",
        "output": "6\n"
      }
    ]
  },
  "528": {
    "id": 528,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=528",
    "source": {
      "sourceString": "2015 February Bronze",
      "year": 2015,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Hopscotch (Bronze)",
      "place": 3,
      "name": "Cow Hopscotch (Bronze)"
    },
    "input": "hopscotch.in",
    "output": "hopscotch.out",
    "samples": [
      {
        "input": "4 4\nRRRR\nRRBR\nRBBR\nRRRR\n",
        "output": "3\n"
      }
    ]
  },
  "529": {
    "id": 529,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=529",
    "source": {
      "sourceString": "2015 February Silver",
      "year": 2015,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Censoring (Silver)",
      "place": 1,
      "name": "Censoring (Silver)"
    },
    "input": "censor.in",
    "output": "censor.out",
    "samples": [
      {
        "input": "whatthemomooofun\nmoo\n",
        "output": "whatthefun\n"
      }
    ]
  },
  "530": {
    "id": 530,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=530",
    "source": {
      "sourceString": "2015 February Silver",
      "year": 2015,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Hopscotch (Silver)",
      "place": 2,
      "name": "Cow Hopscotch (Silver)"
    },
    "input": "hopscotch.in",
    "output": "hopscotch.out",
    "samples": [
      {
        "input": "4 4 4\n1 1 1 1\n1 3 2 1\n1 2 4 1\n1 1 1 1\n",
        "output": "5\n"
      }
    ]
  },
  "531": {
    "id": 531,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=531",
    "source": {
      "sourceString": "2015 February Silver",
      "year": 2015,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Superbull",
      "place": 3,
      "name": "Superbull"
    },
    "input": "superbull.in",
    "output": "superbull.out",
    "samples": [
      {
        "input": "4\n3\n6\n9\n10\n",
        "output": "37\n"
      }
    ]
  },
  "532": {
    "id": 532,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=532",
    "source": {
      "sourceString": "2015 February Gold",
      "year": 2015,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Hopscotch (Gold)",
      "place": 1,
      "name": "Cow Hopscotch (Gold)"
    },
    "input": "hopscotch.in",
    "output": "hopscotch.out",
    "samples": [
      {
        "input": "4 4 4\n1 1 1 1\n1 3 2 1\n1 2 4 1\n1 1 1 1\n",
        "output": "5\n"
      }
    ]
  },
  "533": {
    "id": 533,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=533",
    "source": {
      "sourceString": "2015 February Gold",
      "year": 2015,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Censoring (Gold)",
      "place": 2,
      "name": "Censoring (Gold)"
    },
    "input": "censor.in",
    "output": "censor.out",
    "samples": [
      {
        "input": "begintheescapexecutionatthebreakofdawn\n2\nescape\nexecution\n",
        "output": "beginthatthebreakofdawn\n"
      }
    ]
  },
  "534": {
    "id": 534,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=534",
    "source": {
      "sourceString": "2015 February Gold",
      "year": 2015,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Fencing the Herd",
      "place": 3,
      "name": "Fencing the Herd"
    },
    "input": "fencing.in",
    "output": "fencing.out",
    "samples": [
      {
        "input": "3 4\n0 0\n0 1\n1 0\n2 2 2 3\n1 1 1\n2 2 2 3\n2 0 1 1\n",
        "output": "YES\nNO\nNO\n"
      }
    ]
  },
  "545": {
    "id": 545,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=545",
    "source": {
      "sourceString": "2015 US Open Bronze",
      "year": 2015,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Moocryption",
      "place": 1,
      "name": "Moocryption"
    },
    "input": "moocrypt.in",
    "output": "moocrypt.out",
    "samples": [
      {
        "input": "4 6\nTAMHGI\nMMQVWM\nQMMQSM\nHBQUMQ\n",
        "output": "6\n"
      }
    ]
  },
  "546": {
    "id": 546,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=546",
    "source": {
      "sourceString": "2015 US Open Bronze",
      "year": 2015,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Bessie Gets Even",
      "place": 2,
      "name": "Bessie Gets Even"
    },
    "input": "geteven.in",
    "output": "geteven.out",
    "samples": [
      {
        "input": "10\nB 2\nE 5\nS 7\nI 10\nO 16\nM 19\nB 3\nG 1\nI 9\nM 2\n",
        "output": "6\n"
      }
    ]
  },
  "547": {
    "id": 547,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=547",
    "source": {
      "sourceString": "2015 US Open Bronze",
      "year": 2015,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Trapped in the Haybales (Bronze)",
      "place": 3,
      "name": "Trapped in the Haybales (Bronze)"
    },
    "input": "trapped.in",
    "output": "trapped.out",
    "samples": [
      {
        "input": "5\n8 1\n1 4\n8 8\n7 15\n4 20\n",
        "output": "14\n"
      }
    ]
  },
  "548": {
    "id": 548,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=548",
    "source": {
      "sourceString": "2015 US Open Bronze",
      "year": 2015,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "4. Palindromic Paths (Bronze)",
      "place": 4,
      "name": "Palindromic Paths (Bronze)"
    },
    "input": "palpath.in",
    "output": "palpath.out",
    "samples": [
      {
        "input": "4\nABCD\nBXZX\nCDXB\nWCBA\n",
        "output": "4\n"
      }
    ]
  },
  "549": {
    "id": 549,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=549",
    "source": {
      "sourceString": "2015 US Open Silver",
      "year": 2015,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bessie Goes Moo",
      "place": 1,
      "name": "Bessie Goes Moo"
    },
    "input": "bgm.in",
    "output": "bgm.out",
    "samples": [
      {
        "input": "10\nB 2\nE 5\nS 7\nI 10\nO 16\nM 19\nB 3\nG 1\nI 9\nM 2\n",
        "output": "2\n"
      }
    ]
  },
  "550": {
    "id": 550,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=550",
    "source": {
      "sourceString": "2015 US Open Silver",
      "year": 2015,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Trapped in the Haybales (Silver)",
      "place": 2,
      "name": "Trapped in the Haybales (Silver)"
    },
    "input": "trapped.in",
    "output": "trapped.out",
    "samples": [
      {
        "input": "5 7\n8 1\n1 4\n3 8\n12 15\n20 20\n",
        "output": "4\n"
      }
    ]
  },
  "551": {
    "id": 551,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=551",
    "source": {
      "sourceString": "2015 US Open Silver",
      "year": 2015,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Bessie's Birthday Buffet",
      "place": 3,
      "name": "Bessie's Birthday Buffet"
    },
    "input": "buffet.in",
    "output": "buffet.out",
    "samples": [
      {
        "input": "5 2\n4 1 2\n1 3 1 3 4\n6 2 2 5\n5 2 2 5\n2 2 3 4\n",
        "output": "7\n"
      }
    ]
  },
  "552": {
    "id": 552,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=552",
    "source": {
      "sourceString": "2015 US Open Gold",
      "year": 2015,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Googol",
      "place": 1,
      "name": "Googol"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": []
  },
  "553": {
    "id": 553,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=553",
    "source": {
      "sourceString": "2015 US Open Gold",
      "year": 2015,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Palindromic Paths",
      "place": 2,
      "name": "Palindromic Paths"
    },
    "input": "palpath.in",
    "output": "palpath.out",
    "samples": [
      {
        "input": "4\nABCD\nBXZX\nCDXB\nWCBA\n",
        "output": "12\n"
      }
    ]
  },
  "554": {
    "id": 554,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=554",
    "source": {
      "sourceString": "2015 US Open Gold",
      "year": 2015,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Trapped in the Haybales (Gold)",
      "place": 3,
      "name": "Trapped in the Haybales (Gold)"
    },
    "input": "trapped.in",
    "output": "trapped.out",
    "samples": [
      {
        "input": "5\n8 1\n1 4\n8 8\n7 15\n4 20\n",
        "output": "14\n"
      }
    ]
  },
  "567": {
    "id": 567,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=567",
    "source": {
      "sourceString": "2015 December Bronze",
      "year": 2015,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Fence Painting",
      "place": 1,
      "name": "Fence Painting"
    },
    "input": "paint.in",
    "output": "paint.out",
    "samples": [
      {
        "input": "7 10\n4 8\n",
        "output": "6\n"
      }
    ]
  },
  "568": {
    "id": 568,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=568",
    "source": {
      "sourceString": "2015 December Bronze",
      "year": 2015,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Speeding Ticket",
      "place": 2,
      "name": "Speeding Ticket"
    },
    "input": "speeding.in",
    "output": "speeding.out",
    "samples": [
      {
        "input": "3 3\n40 75\n50 35\n10 45\n40 76\n20 30\n40 40\n",
        "output": "5\n"
      }
    ]
  },
  "569": {
    "id": 569,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=569",
    "source": {
      "sourceString": "2015 December Bronze",
      "year": 2015,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Contaminated Milk",
      "place": 3,
      "name": "Contaminated Milk"
    },
    "input": "badmilk.in",
    "output": "file\nbadmilk.out",
    "samples": [
      {
        "input": "3 4 7 2\n1 1 1\n1 4 1\n1 3 4\n1 2 2\n3 1 3\n2 1 5\n2 2 7\n1 3\n2 8\n",
        "output": "3\n"
      }
    ]
  },
  "570": {
    "id": 570,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=570",
    "source": {
      "sourceString": "2015 December Silver",
      "year": 2015,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Switching on the Lights",
      "place": 1,
      "name": "Switching on the Lights"
    },
    "input": "lightson.in",
    "output": "file\nlightson.out",
    "samples": [
      {
        "input": "3 6\n1 1 1 2\n2 1 2 2\n1 1 1 3\n2 3 3 1\n1 3 1 2\n1 3 2 1\n",
        "output": "5\n"
      }
    ]
  },
  "571": {
    "id": 571,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=571",
    "source": {
      "sourceString": "2015 December Silver",
      "year": 2015,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. High Card Wins",
      "place": 2,
      "name": "High Card Wins"
    },
    "input": "highcard.in",
    "output": "highcard.out",
    "samples": [
      {
        "input": "3\n1\n6\n4\n",
        "output": "2\n"
      }
    ]
  },
  "572": {
    "id": 572,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=572",
    "source": {
      "sourceString": "2015 December Silver",
      "year": 2015,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Breed Counting",
      "place": 3,
      "name": "Breed Counting"
    },
    "input": "bcount.in",
    "output": "bcount.out",
    "samples": [
      {
        "input": "6 3\n2\n1\n1\n3\n2\n1\n1 6\n3 3\n2 4\n",
        "output": "3 2 1\n1 0 0\n2 0 1\n"
      }
    ]
  },
  "573": {
    "id": 573,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=573",
    "source": {
      "sourceString": "2015 December Gold",
      "year": 2015,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. High Card Low Card (Gold)",
      "place": 1,
      "name": "High Card Low Card (Gold)"
    },
    "input": "cardgame.in",
    "output": "cardgame.out",
    "samples": [
      {
        "input": "4\n1\n8\n4\n3\n",
        "output": "2\n"
      }
    ]
  },
  "574": {
    "id": 574,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=574",
    "source": {
      "sourceString": "2015 December Gold",
      "year": 2015,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Fruit Feast",
      "place": 2,
      "name": "Fruit Feast"
    },
    "input": "feast.in",
    "output": "feast.out",
    "samples": [
      {
        "input": "8 5 6\n",
        "output": "8\n"
      }
    ]
  },
  "575": {
    "id": 575,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=575",
    "source": {
      "sourceString": "2015 December Gold",
      "year": 2015,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Bessie's Dream",
      "place": 3,
      "name": "Bessie's Dream"
    },
    "input": "dream.in",
    "output": "dream.out",
    "samples": [
      {
        "input": "4 4\n1 0 2 1\n1 1 4 1\n1 0 4 0\n1 3 1 1\n",
        "output": "10\n"
      }
    ]
  },
  "576": {
    "id": 576,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=576",
    "source": {
      "sourceString": "2015 December Platinum",
      "year": 2015,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Max Flow",
      "place": 1,
      "name": "Max Flow"
    },
    "input": "maxflow.in",
    "output": "maxflow.out",
    "samples": [
      {
        "input": "5 10\n3 4\n1 5\n4 2\n5 4\n5 4\n5 4\n3 5\n4 3\n4 3\n1 3\n3 5\n5 4\n1 5\n3 4\n",
        "output": "9\n"
      }
    ]
  },
  "577": {
    "id": 577,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=577",
    "source": {
      "sourceString": "2015 December Platinum",
      "year": 2015,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. High Card Low Card (Platinum)",
      "place": 2,
      "name": "High Card Low Card (Platinum)"
    },
    "input": "cardgame.in",
    "output": "cardgame.out",
    "samples": [
      {
        "input": "4\n1\n8\n4\n3\n",
        "output": "3\n"
      }
    ]
  },
  "578": {
    "id": 578,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=578",
    "source": {
      "sourceString": "2015 December Platinum",
      "year": 2015,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Counting Haybales",
      "place": 3,
      "name": "Counting Haybales"
    },
    "input": "haybales.in",
    "output": "haybales.out",
    "samples": [
      {
        "input": "4 5\n3 1 2 4\nM 3 4\nS 1 3\nP 2 3 1\nM 3 4\nS 1 3\n",
        "output": "2\n6\n3\n8\n"
      }
    ]
  },
  "591": {
    "id": 591,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=591",
    "source": {
      "sourceString": "2016 January Bronze",
      "year": 2016,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Promotion Counting",
      "place": 1,
      "name": "Promotion Counting"
    },
    "input": "promote.in",
    "output": "promote.out",
    "samples": [
      {
        "input": "1 2\n1 1\n1 1\n1 2\n",
        "output": "1\n1\n1\n"
      }
    ]
  },
  "592": {
    "id": 592,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=592",
    "source": {
      "sourceString": "2016 January Bronze",
      "year": 2016,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Angry Cows",
      "place": 2,
      "name": "Angry Cows"
    },
    "input": "angry.in",
    "output": "angry.out",
    "samples": [
      {
        "input": "6\n8\n5\n6\n13\n3\n4\n",
        "output": "5\n"
      }
    ]
  },
  "593": {
    "id": 593,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=593",
    "source": {
      "sourceString": "2016 January Bronze",
      "year": 2016,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Mowing the Field",
      "place": 3,
      "name": "Mowing the Field"
    },
    "input": "mowing.in",
    "output": "mowing.out",
    "samples": [
      {
        "input": "6\nN 10\nE 2\nS 3\nW 4\nS 5\nE 8\n",
        "output": "10\n"
      }
    ]
  },
  "594": {
    "id": 594,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=594",
    "source": {
      "sourceString": "2016 January Silver",
      "year": 2016,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Angry Cows",
      "place": 1,
      "name": "Angry Cows"
    },
    "input": "angry.in",
    "output": "angry.out",
    "samples": [
      {
        "input": "7 2\n20\n25\n18\n8\n10\n3\n1\n",
        "output": "5\n"
      }
    ]
  },
  "595": {
    "id": 595,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=595",
    "source": {
      "sourceString": "2016 January Silver",
      "year": 2016,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Subsequences Summing to Sevens",
      "place": 2,
      "name": "Subsequences Summing to Sevens"
    },
    "input": "div7.in",
    "output": "div7.out",
    "samples": [
      {
        "input": "7\n3\n5\n1\n6\n2\n14\n10\n",
        "output": "5\n"
      }
    ]
  },
  "596": {
    "id": 596,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=596",
    "source": {
      "sourceString": "2016 January Silver",
      "year": 2016,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Build Gates",
      "place": 3,
      "name": "Build Gates"
    },
    "input": "gates.in",
    "output": "gates.out",
    "samples": [
      {
        "input": "14\nNNNESWWWSSEEEE\n",
        "output": "2\n"
      }
    ]
  },
  "597": {
    "id": 597,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=597",
    "source": {
      "sourceString": "2016 January Gold",
      "year": 2016,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Angry Cows",
      "place": 1,
      "name": "Angry Cows"
    },
    "input": "angry.in",
    "output": "angry.out",
    "samples": [
      {
        "input": "5\n8\n10\n3\n11\n1\n",
        "output": "3.0\n"
      }
    ]
  },
  "598": {
    "id": 598,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=598",
    "source": {
      "sourceString": "2016 January Gold",
      "year": 2016,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Radio Contact",
      "place": 2,
      "name": "Radio Contact"
    },
    "input": "radio.in",
    "output": "radio.out",
    "samples": [
      {
        "input": "2 7\n3 0\n5 0\nNN\nNWWWWWN\n",
        "output": "28\n"
      }
    ]
  },
  "599": {
    "id": 599,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=599",
    "source": {
      "sourceString": "2016 January Gold",
      "year": 2016,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Lights Out",
      "place": 3,
      "name": "Lights Out"
    },
    "input": "lightsout.in",
    "output": "lightsout.out",
    "samples": [
      {
        "input": "4\n0 0\n0 10\n1 10\n1 0\n",
        "output": "2\n"
      }
    ]
  },
  "600": {
    "id": 600,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=600",
    "source": {
      "sourceString": "2016 January Platinum",
      "year": 2016,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Fort Moo",
      "place": 1,
      "name": "Fort Moo"
    },
    "input": "fortmoo.in",
    "output": "fortmoo.out",
    "samples": [
      {
        "input": "5 6\n......\n..X..X\nX..X..\n......\n..X...\n",
        "output": "16\n"
      }
    ]
  },
  "601": {
    "id": 601,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=601",
    "source": {
      "sourceString": "2016 January Platinum",
      "year": 2016,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Mowing the Field",
      "place": 2,
      "name": "Mowing the Field"
    },
    "input": "mowing.in",
    "output": "mowing.out",
    "samples": [
      {
        "input": "7 4\n0 10\n10 10\n10 5\n3 5\n3 12\n6 12\n6 3\n",
        "output": "1\n"
      }
    ]
  },
  "602": {
    "id": 602,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=602",
    "source": {
      "sourceString": "2016 January Platinum",
      "year": 2016,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Lights Out",
      "place": 3,
      "name": "Lights Out"
    },
    "input": "lightsout.in",
    "output": "lightsout.out",
    "samples": [
      {
        "input": "4\n0 0\n0 10\n1 10\n1 0\n",
        "output": "2\n"
      }
    ]
  },
  "615": {
    "id": 615,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=615",
    "source": {
      "sourceString": "2016 February Bronze",
      "year": 2016,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Milk Pails",
      "place": 1,
      "name": "Milk Pails"
    },
    "input": "pails.in",
    "output": "pails.out",
    "samples": [
      {
        "input": "17 25 77\n",
        "output": "76\n"
      }
    ]
  },
  "616": {
    "id": 616,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=616",
    "source": {
      "sourceString": "2016 February Bronze",
      "year": 2016,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Circular Barn",
      "place": 2,
      "name": "Circular Barn"
    },
    "input": "cbarn.in",
    "output": "cbarn.out",
    "samples": [
      {
        "input": "5\n4\n7\n8\n6\n4\n",
        "output": "48\n"
      }
    ]
  },
  "617": {
    "id": 617,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=617",
    "source": {
      "sourceString": "2016 February Bronze",
      "year": 2016,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Load Balancing",
      "place": 3,
      "name": "Load Balancing"
    },
    "input": "balancing.in",
    "output": "balancing.out",
    "samples": [
      {
        "input": "7 10\n7 3\n5 5\n9 7\n3 1\n7 7\n5 3\n9 1\n",
        "output": "2\n"
      }
    ]
  },
  "618": {
    "id": 618,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=618",
    "source": {
      "sourceString": "2016 February Silver",
      "year": 2016,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Circular Barn",
      "place": 1,
      "name": "Circular Barn"
    },
    "input": "cbarn.in",
    "output": "cbarn.out",
    "samples": [
      {
        "input": "10\n1\n0\n0\n2\n0\n0\n1\n2\n2\n2\n",
        "output": "33\n"
      }
    ]
  },
  "619": {
    "id": 619,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=619",
    "source": {
      "sourceString": "2016 February Silver",
      "year": 2016,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Load Balancing",
      "place": 2,
      "name": "Load Balancing"
    },
    "input": "balancing.in",
    "output": "balancing.out",
    "samples": [
      {
        "input": "7\n7 3\n5 5\n7 13\n3 1\n11 7\n5 3\n9 1\n",
        "output": "2\n"
      }
    ]
  },
  "620": {
    "id": 620,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=620",
    "source": {
      "sourceString": "2016 February Silver",
      "year": 2016,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Milk Pails",
      "place": 3,
      "name": "Milk Pails"
    },
    "input": "pails.in",
    "output": "pails.out",
    "samples": [
      {
        "input": "14 50 2 32\n",
        "output": "18\n"
      }
    ]
  },
  "621": {
    "id": 621,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=621",
    "source": {
      "sourceString": "2016 February Gold",
      "year": 2016,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Circular Barn",
      "place": 1,
      "name": "Circular Barn"
    },
    "input": "cbarn.in",
    "output": "cbarn.out",
    "samples": [
      {
        "input": "10\n1\n0\n0\n2\n0\n0\n1\n2\n2\n2\n",
        "output": "33\n"
      }
    ]
  },
  "622": {
    "id": 622,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=622",
    "source": {
      "sourceString": "2016 February Gold",
      "year": 2016,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Circular Barn Revisited",
      "place": 2,
      "name": "Circular Barn Revisited"
    },
    "input": "cbarn2.in",
    "output": "cbarn2.out",
    "samples": [
      {
        "input": "6 2\n2\n5\n4\n2\n6\n2\n",
        "output": "14\n"
      }
    ]
  },
  "623": {
    "id": 623,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=623",
    "source": {
      "sourceString": "2016 February Gold",
      "year": 2016,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Fenced In",
      "place": 3,
      "name": "Fenced In"
    },
    "input": "fencedin.in",
    "output": "fencedin.out",
    "samples": [
      {
        "input": "15 15 5 2\n2\n5\n10\n6\n4\n11\n3\n",
        "output": "44\n"
      }
    ]
  },
  "624": {
    "id": 624,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=624",
    "source": {
      "sourceString": "2016 February Platinum",
      "year": 2016,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Load Balancing",
      "place": 1,
      "name": "Load Balancing"
    },
    "input": "balancing.in",
    "output": "balancing.out",
    "samples": [
      {
        "input": "7\n7 3\n5 5\n7 13\n3 1\n11 7\n5 3\n9 1\n",
        "output": "2\n"
      }
    ]
  },
  "625": {
    "id": 625,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=625",
    "source": {
      "sourceString": "2016 February Platinum",
      "year": 2016,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Fenced In",
      "place": 2,
      "name": "Fenced In"
    },
    "input": "fencedin.in",
    "output": "fencedin.out",
    "samples": [
      {
        "input": "15 15 5 2\n2\n5\n10\n6\n4\n11\n3\n",
        "output": "44\n"
      }
    ]
  },
  "626": {
    "id": 626,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=626",
    "source": {
      "sourceString": "2016 February Platinum",
      "year": 2016,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Circular Barn",
      "place": 3,
      "name": "Circular Barn"
    },
    "input": "cbarn.in",
    "output": "cbarn.out",
    "samples": [
      {
        "input": "6 2\n2\n5\n4\n2\n6\n2\n",
        "output": "14\n"
      }
    ]
  },
  "639": {
    "id": 639,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=639",
    "source": {
      "sourceString": "2016 US Open Bronze",
      "year": 2016,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Diamond Collector",
      "place": 1,
      "name": "Diamond Collector"
    },
    "input": "diamond.in",
    "output": "diamond.out",
    "samples": [
      {
        "input": "5 3\n1\n6\n4\n3\n1\n",
        "output": "4\n"
      }
    ]
  },
  "640": {
    "id": 640,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=640",
    "source": {
      "sourceString": "2016 US Open Bronze",
      "year": 2016,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Bull in a China Shop",
      "place": 2,
      "name": "Bull in a China Shop"
    },
    "input": "bcs.in",
    "output": "bcs.out",
    "samples": [
      {
        "input": "4 3\n####\n#..#\n#.##\n....\n.#..\n.#..\n##..\n....\n####\n##..\n#..#\n####\n....\n.###\n.#..\n.#..\n",
        "output": "1 3\n"
      }
    ]
  },
  "641": {
    "id": 641,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=641",
    "source": {
      "sourceString": "2016 US Open Bronze",
      "year": 2016,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Field Reduction",
      "place": 3,
      "name": "Field Reduction"
    },
    "input": "reduce.in",
    "output": "reduce.out",
    "samples": [
      {
        "input": "4\n2 4\n1 1\n5 2\n17 25\n",
        "output": "12\n"
      }
    ]
  },
  "642": {
    "id": 642,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=642",
    "source": {
      "sourceString": "2016 US Open Silver",
      "year": 2016,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Field Reduction",
      "place": 1,
      "name": "Field Reduction"
    },
    "input": "reduce.in",
    "output": "reduce.out",
    "samples": [
      {
        "input": "6\n1 1\n7 8\n10 9\n8 12\n4 100\n50 7\n",
        "output": "12\n"
      }
    ]
  },
  "643": {
    "id": 643,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=643",
    "source": {
      "sourceString": "2016 US Open Silver",
      "year": 2016,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Diamond Collector",
      "place": 2,
      "name": "Diamond Collector"
    },
    "input": "diamond.in",
    "output": "diamond.out",
    "samples": [
      {
        "input": "7 3\n10\n5\n1\n12\n9\n5\n14\n",
        "output": "5\n"
      }
    ]
  },
  "644": {
    "id": 644,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=644",
    "source": {
      "sourceString": "2016 US Open Silver",
      "year": 2016,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Closing the Farm",
      "place": 3,
      "name": "Closing the Farm"
    },
    "input": "closing.in",
    "output": "closing.out",
    "samples": [
      {
        "input": "4 3\n1 2\n2 3\n3 4\n3\n4\n1\n2\n",
        "output": "YES\nNO\nYES\nYES\n"
      }
    ]
  },
  "645": {
    "id": 645,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=645",
    "source": {
      "sourceString": "2016 US Open Gold",
      "year": 2016,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Splitting the Field",
      "place": 1,
      "name": "Splitting the Field"
    },
    "input": "split.in",
    "output": "split.out",
    "samples": [
      {
        "input": "6\n4 2\n8 10\n1 1\n9 12\n14 7\n2 3\n",
        "output": "107\n"
      }
    ]
  },
  "646": {
    "id": 646,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=646",
    "source": {
      "sourceString": "2016 US Open Gold",
      "year": 2016,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Closing the Farm",
      "place": 2,
      "name": "Closing the Farm"
    },
    "input": "closing.in",
    "output": "closing.out",
    "samples": [
      {
        "input": "4 3\n1 2\n2 3\n3 4\n3\n4\n1\n2\n",
        "output": "YES\nNO\nYES\nYES\n"
      }
    ]
  },
  "647": {
    "id": 647,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=647",
    "source": {
      "sourceString": "2016 US Open Gold",
      "year": 2016,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. 248",
      "place": 3,
      "name": "248"
    },
    "input": "248.in",
    "output": "248.out",
    "samples": [
      {
        "input": "4\n1\n1\n1\n2\n",
        "output": "3\n"
      }
    ]
  },
  "648": {
    "id": 648,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=648",
    "source": {
      "sourceString": "2016 US Open Platinum",
      "year": 2016,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. 262144",
      "place": 1,
      "name": "262144"
    },
    "input": "262144.in",
    "output": "262144.out",
    "samples": [
      {
        "input": "4\n1\n1\n1\n2\n",
        "output": "3\n"
      }
    ]
  },
  "649": {
    "id": 649,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=649",
    "source": {
      "sourceString": "2016 US Open Platinum",
      "year": 2016,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Bull in a China Shop",
      "place": 2,
      "name": "Bull in a China Shop"
    },
    "input": "bcs.in",
    "output": "bcs.out",
    "samples": [
      {
        "input": "5\n5 5\naaaaa\n..a..\nbbabb\n..a..\naaaaa\n3 5\n..abb\n..a..\naaaaa\n5 2\na.\na.\naa\na.\na.\n1 2\nbb\n1 5\nbbabb\n2 5\naaaaa\n..a..\n",
        "output": "3\n"
      }
    ]
  },
  "650": {
    "id": 650,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=650",
    "source": {
      "sourceString": "2016 US Open Platinum",
      "year": 2016,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Landscaping",
      "place": 3,
      "name": "Landscaping"
    },
    "input": "landscape.in",
    "output": "landscape.out",
    "samples": [
      {
        "input": "4 100 200 1\n1 4\n2 3\n3 2\n4 0\n",
        "output": "210\n"
      }
    ]
  },
  "663": {
    "id": 663,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=663",
    "source": {
      "sourceString": "2016 December Bronze",
      "year": 2016,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Square Pasture",
      "place": 1,
      "name": "Square Pasture"
    },
    "input": "square.in",
    "output": "square.out",
    "samples": [
      {
        "input": "6 6 8 8\n1 8 4 9\n",
        "output": "49\n"
      }
    ]
  },
  "664": {
    "id": 664,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=664",
    "source": {
      "sourceString": "2016 December Bronze",
      "year": 2016,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Block Game",
      "place": 2,
      "name": "Block Game"
    },
    "input": "blocks.in",
    "output": "blocks.out",
    "samples": [
      {
        "input": "3\nfox box\ndog cat\ncar bus\n",
        "output": "2\n2\n2\n1\n0\n1\n1\n0\n0\n0\n0\n0\n0\n0\n2\n0\n0\n1\n1\n1\n1\n0\n0\n1\n0\n0\n"
      }
    ]
  },
  "665": {
    "id": 665,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=665",
    "source": {
      "sourceString": "2016 December Bronze",
      "year": 2016,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The Cow-Signal",
      "place": 3,
      "name": "The Cow-Signal"
    },
    "input": "cowsignal.in",
    "output": "cowsignal.out",
    "samples": [
      {
        "input": "5 4 2\nXXX.\nX..X\nXXX.\nX..X\nXXX.\n",
        "output": "XXXXXX..\nXXXXXX..\nXX....XX\nXX....XX\nXXXXXX..\nXXXXXX..\nXX....XX\nXX....XX\nXXXXXX..\nXXXXXX..\n"
      }
    ]
  },
  "666": {
    "id": 666,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=666",
    "source": {
      "sourceString": "2016 December Silver",
      "year": 2016,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Counting Haybales",
      "place": 1,
      "name": "Counting Haybales"
    },
    "input": "haybales.in",
    "output": "haybales.out",
    "samples": [
      {
        "input": "4 6\n3 2 7 5\n2 3\n2 4\n2 5\n2 7\n4 6\n8 10\n",
        "output": "2\n2\n3\n4\n1\n0\n"
      }
    ]
  },
  "667": {
    "id": 667,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=667",
    "source": {
      "sourceString": "2016 December Silver",
      "year": 2016,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cities and States",
      "place": 2,
      "name": "Cities and States"
    },
    "input": "citystate.in",
    "output": "citystate.out",
    "samples": [
      {
        "input": "6\nMIAMI FL\nDALLAS TX\nFLINT MI\nCLEMSON SC\nBOSTON MA\nORLANDO FL\n",
        "output": "1\n"
      }
    ]
  },
  "668": {
    "id": 668,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=668",
    "source": {
      "sourceString": "2016 December Silver",
      "year": 2016,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Moocast",
      "place": 3,
      "name": "Moocast"
    },
    "input": "moocast.in",
    "output": "moocast.out",
    "samples": [
      {
        "input": "4\n1 3 5\n5 4 3\n7 2 1\n6 1 1\n",
        "output": "3\n"
      }
    ]
  },
  "669": {
    "id": 669,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=669",
    "source": {
      "sourceString": "2016 December Gold",
      "year": 2016,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Moocast",
      "place": 1,
      "name": "Moocast"
    },
    "input": "moocast.in",
    "output": "moocast.out",
    "samples": [
      {
        "input": "4\n1 3\n5 4\n7 2\n6 1\n",
        "output": "17\n"
      }
    ]
  },
  "670": {
    "id": 670,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=670",
    "source": {
      "sourceString": "2016 December Gold",
      "year": 2016,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Checklist",
      "place": 2,
      "name": "Cow Checklist"
    },
    "input": "checklist.in",
    "output": "checklist.out",
    "samples": [
      {
        "input": "3 2\n0 0\n1 0\n2 0\n0 3\n1 3\n",
        "output": "20\n"
      }
    ]
  },
  "671": {
    "id": 671,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=671",
    "source": {
      "sourceString": "2016 December Gold",
      "year": 2016,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Lasers and Mirrors",
      "place": 3,
      "name": "Lasers and Mirrors"
    },
    "input": "lasers.in",
    "output": "lasers.out",
    "samples": [
      {
        "input": "4 0 0 7 2\n3 2\n0 2\n1 6\n3 0\n",
        "output": "1\n"
      }
    ]
  },
  "672": {
    "id": 672,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=672",
    "source": {
      "sourceString": "2016 December Platinum",
      "year": 2016,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Lots of Triangles",
      "place": 1,
      "name": "Lots of Triangles"
    },
    "input": "triangles.in",
    "output": "triangles.out",
    "samples": [
      {
        "input": "7\n3 6\n17 15\n13 15\n6 12\n9 1\n2 7\n10 19\n",
        "output": "28\n6\n1\n0\n0\n"
      }
    ]
  },
  "673": {
    "id": 673,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=673",
    "source": {
      "sourceString": "2016 December Platinum",
      "year": 2016,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Team Building",
      "place": 2,
      "name": "Team Building"
    },
    "input": "team.in",
    "output": "team.out",
    "samples": [
      {
        "input": "10 10 3\n1 2 2 6 6 7 8 9 14 17\n1 3 8 10 10 16 16 18 19 19\n",
        "output": "382\n"
      }
    ]
  },
  "674": {
    "id": 674,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=674",
    "source": {
      "sourceString": "2016 December Platinum",
      "year": 2016,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Robotic Cow Herd",
      "place": 3,
      "name": "Robotic Cow Herd"
    },
    "input": "roboherd.in",
    "output": "roboherd.out",
    "samples": [
      {
        "input": "3 10\n4 1 5 3 10\n3 2 3 3\n5 1 3 4 6 6\n",
        "output": "61\n"
      }
    ]
  },
  "687": {
    "id": 687,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=687",
    "source": {
      "sourceString": "2017 January Bronze",
      "year": 2017,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Don't Be Last!",
      "place": 1,
      "name": "Don't Be Last!"
    },
    "input": "notlast.in",
    "output": "notlast.out",
    "samples": [
      {
        "input": "10\nBessie 1\nMaggie 13\nElsie 3\nElsie 4\nHenrietta 4\nGertie 12\nDaisy 7\nAnnabelle 10\nBessie 6\nHenrietta 5\n",
        "output": "Henrietta\n"
      }
    ]
  },
  "688": {
    "id": 688,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=688",
    "source": {
      "sourceString": "2017 January Bronze",
      "year": 2017,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Hoof, Paper, Scissors",
      "place": 2,
      "name": "Hoof, Paper, Scissors"
    },
    "input": "hps.in",
    "output": "hps.out",
    "samples": [
      {
        "input": "5\n1 2\n2 2\n1 3\n1 1\n3 2\n",
        "output": "2\n"
      }
    ]
  },
  "689": {
    "id": 689,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=689",
    "source": {
      "sourceString": "2017 January Bronze",
      "year": 2017,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Tipping",
      "place": 3,
      "name": "Cow Tipping"
    },
    "input": "cowtip.in",
    "output": "cowtip.out",
    "samples": [
      {
        "input": "3\n001\n111\n111\n",
        "output": "2\n"
      }
    ]
  },
  "690": {
    "id": 690,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=690",
    "source": {
      "sourceString": "2017 January Silver",
      "year": 2017,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Dance Show",
      "place": 1,
      "name": "Cow Dance Show"
    },
    "input": "cowdance.in",
    "output": "cowdance.out",
    "samples": [
      {
        "input": "5 8\n4\n7\n8\n6\n4\n",
        "output": "4\n"
      }
    ]
  },
  "691": {
    "id": 691,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=691",
    "source": {
      "sourceString": "2017 January Silver",
      "year": 2017,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Hoof, Paper, Scissors",
      "place": 2,
      "name": "Hoof, Paper, Scissors"
    },
    "input": "hps.in",
    "output": "hps.out",
    "samples": [
      {
        "input": "5\nP\nP\nH\nP\nS\n",
        "output": "4\n"
      }
    ]
  },
  "692": {
    "id": 692,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=692",
    "source": {
      "sourceString": "2017 January Silver",
      "year": 2017,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Secret Cow Code",
      "place": 3,
      "name": "Secret Cow Code"
    },
    "input": "cowcode.in",
    "output": "cowcode.out",
    "samples": [
      {
        "input": "COW 8\n",
        "output": "C\n"
      }
    ]
  },
  "693": {
    "id": 693,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=693",
    "source": {
      "sourceString": "2017 January Gold",
      "year": 2017,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Balanced Photo",
      "place": 1,
      "name": "Balanced Photo"
    },
    "input": "bphoto.in",
    "output": "bphoto.out",
    "samples": [
      {
        "input": "7\n34\n6\n23\n0\n5\n99\n2\n",
        "output": "3\n"
      }
    ]
  },
  "694": {
    "id": 694,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=694",
    "source": {
      "sourceString": "2017 January Gold",
      "year": 2017,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Hoof, Paper, Scissors",
      "place": 2,
      "name": "Hoof, Paper, Scissors"
    },
    "input": "hps.in",
    "output": "hps.out",
    "samples": [
      {
        "input": "5 1\nP\nP\nH\nP\nS\n",
        "output": "4\n"
      }
    ]
  },
  "695": {
    "id": 695,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=695",
    "source": {
      "sourceString": "2017 January Gold",
      "year": 2017,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Navigation",
      "place": 3,
      "name": "Cow Navigation"
    },
    "input": "cownav.in",
    "output": "cownav.out",
    "samples": [
      {
        "input": "3\nEHE\nEEE\nEEE\n",
        "output": "9\n"
      }
    ]
  },
  "696": {
    "id": 696,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=696",
    "source": {
      "sourceString": "2017 January Platinum",
      "year": 2017,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Promotion Counting",
      "place": 1,
      "name": "Promotion Counting"
    },
    "input": "promote.in",
    "output": "promote.out",
    "samples": [
      {
        "input": "5\n804289384\n846930887\n681692778\n714636916\n957747794\n1\n1\n2\n3\n",
        "output": "2\n0\n1\n0\n0\n"
      }
    ]
  },
  "697": {
    "id": 697,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=697",
    "source": {
      "sourceString": "2017 January Platinum",
      "year": 2017,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Building a Tall Barn",
      "place": 2,
      "name": "Building a Tall Barn"
    },
    "input": "tallbarn.in",
    "output": "tallbarn.out",
    "samples": [
      {
        "input": "2 5\n10\n4\n",
        "output": "5\n"
      }
    ]
  },
  "698": {
    "id": 698,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=698",
    "source": {
      "sourceString": "2017 January Platinum",
      "year": 2017,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Subsequence Reversal",
      "place": 3,
      "name": "Subsequence Reversal"
    },
    "input": "subrev.in",
    "output": "subrev.out",
    "samples": [
      {
        "input": "9\n1\n2\n3\n9\n5\n6\n8\n7\n4\n",
        "output": "9\n"
      }
    ]
  },
  "711": {
    "id": 711,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=711",
    "source": {
      "sourceString": "2017 February Bronze",
      "year": 2017,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Why Did the Cow Cross the Road",
      "place": 1,
      "name": "Why Did the Cow Cross the Road"
    },
    "input": "crossroad.in",
    "output": "crossroad.out",
    "samples": [
      {
        "input": "8\n3 1\n3 0\n6 0\n2 1\n4 1\n3 0\n4 0\n3 1\n",
        "output": "3\n"
      }
    ]
  },
  "712": {
    "id": 712,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=712",
    "source": {
      "sourceString": "2017 February Bronze",
      "year": 2017,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Why Did the Cow Cross the Road II",
      "place": 2,
      "name": "Why Did the Cow Cross the Road II"
    },
    "input": "circlecross.in",
    "output": "circlecross.out",
    "samples": [
      {
        "input": "ABCCABDDEEFFGGHHIIJJKKLLMMNNOOPPQQRRSSTTUUVVWWXXYYZZ\n",
        "output": "1\n"
      }
    ]
  },
  "713": {
    "id": 713,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=713",
    "source": {
      "sourceString": "2017 February Bronze",
      "year": 2017,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Why Did the Cow Cross the Road III",
      "place": 3,
      "name": "Why Did the Cow Cross the Road III"
    },
    "input": "cowqueue.in",
    "output": "cowqueue.out",
    "samples": [
      {
        "input": "3\n2 1\n8 3\n5 7\n",
        "output": "15\n"
      }
    ]
  },
  "714": {
    "id": 714,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=714",
    "source": {
      "sourceString": "2017 February Silver",
      "year": 2017,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Why Did the Cow Cross the Road",
      "place": 1,
      "name": "Why Did the Cow Cross the Road"
    },
    "input": "helpcross.in",
    "output": "helpcross.out",
    "samples": [
      {
        "input": "5 4\n7\n8\n6\n2\n9\n2 5\n4 9\n0 3\n8 13\n",
        "output": "3\n"
      }
    ]
  },
  "715": {
    "id": 715,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=715",
    "source": {
      "sourceString": "2017 February Silver",
      "year": 2017,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Why Did the Cow Cross the Road II",
      "place": 2,
      "name": "Why Did the Cow Cross the Road II"
    },
    "input": "maxcross.in",
    "output": "maxcross.out",
    "samples": [
      {
        "input": "10 6 5\n2\n10\n1\n5\n9\n",
        "output": "1\n"
      }
    ]
  },
  "716": {
    "id": 716,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=716",
    "source": {
      "sourceString": "2017 February Silver",
      "year": 2017,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Why Did the Cow Cross the Road III",
      "place": 3,
      "name": "Why Did the Cow Cross the Road III"
    },
    "input": "countcross.in",
    "output": "countcross.out",
    "samples": [
      {
        "input": "3 3 3\n2 2 2 3\n3 3 3 2\n3 3 2 3\n3 3\n2 2\n2 3\n",
        "output": "2\n"
      }
    ]
  },
  "717": {
    "id": 717,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=717",
    "source": {
      "sourceString": "2017 February Gold",
      "year": 2017,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Why Did the Cow Cross the Road",
      "place": 1,
      "name": "Why Did the Cow Cross the Road"
    },
    "input": "visitfj.in",
    "output": "visitfj.out",
    "samples": [
      {
        "input": "4 2\n30 92 36 10\n38 85 60 16\n41 13 5 68\n20 97 13 80\n",
        "output": "31\n"
      }
    ]
  },
  "718": {
    "id": 718,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=718",
    "source": {
      "sourceString": "2017 February Gold",
      "year": 2017,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Why Did the Cow Cross the Road II",
      "place": 2,
      "name": "Why Did the Cow Cross the Road II"
    },
    "input": "nocross.in",
    "output": "nocross.out",
    "samples": [
      {
        "input": "6\n1\n2\n3\n4\n5\n6\n6\n5\n4\n3\n2\n1\n",
        "output": "5\n"
      }
    ]
  },
  "719": {
    "id": 719,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=719",
    "source": {
      "sourceString": "2017 February Gold",
      "year": 2017,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Why Did the Cow Cross the Road III",
      "place": 3,
      "name": "Why Did the Cow Cross the Road III"
    },
    "input": "circlecross.in",
    "output": "circlecross.out",
    "samples": [
      {
        "input": "4\n3\n2\n4\n4\n1\n3\n2\n1\n",
        "output": "3\n"
      }
    ]
  },
  "720": {
    "id": 720,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=720",
    "source": {
      "sourceString": "2017 February Platinum",
      "year": 2017,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Why Did the Cow Cross the Road",
      "place": 1,
      "name": "Why Did the Cow Cross the Road"
    },
    "input": "mincross.in",
    "output": "mincross.out",
    "samples": [
      {
        "input": "5\n5\n4\n1\n3\n2\n1\n3\n2\n5\n4\n",
        "output": "0\n"
      }
    ]
  },
  "721": {
    "id": 721,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=721",
    "source": {
      "sourceString": "2017 February Platinum",
      "year": 2017,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Why Did the Cow Cross the Road II",
      "place": 2,
      "name": "Why Did the Cow Cross the Road II"
    },
    "input": "nocross.in",
    "output": "nocross.out",
    "samples": [
      {
        "input": "6\n1\n2\n3\n4\n5\n6\n6\n5\n4\n3\n2\n1\n",
        "output": "5\n"
      }
    ]
  },
  "722": {
    "id": 722,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=722",
    "source": {
      "sourceString": "2017 February Platinum",
      "year": 2017,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Why Did the Cow Cross the Road III",
      "place": 3,
      "name": "Why Did the Cow Cross the Road III"
    },
    "input": "friendcross.in",
    "output": "friendcross.out",
    "samples": [
      {
        "input": "4 1\n4\n3\n2\n1\n1\n4\n2\n3\n",
        "output": "2\n"
      }
    ]
  },
  "735": {
    "id": 735,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=735",
    "source": {
      "sourceString": "2017 US Open Bronze",
      "year": 2017,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. The Lost Cow",
      "place": 1,
      "name": "The Lost Cow"
    },
    "input": "lostcow.in",
    "output": "lostcow.out",
    "samples": [
      {
        "input": "3 6\n",
        "output": "9\n"
      }
    ]
  },
  "736": {
    "id": 736,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=736",
    "source": {
      "sourceString": "2017 US Open Bronze",
      "year": 2017,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Bovine Genomics",
      "place": 2,
      "name": "Bovine Genomics"
    },
    "input": "cownomics.in",
    "output": "cownomics.out",
    "samples": [
      {
        "input": "3 8\nAATCCCAT\nGATTGCAA\nGGTCGCAA\nACTCCCAG\nACTCGCAT\nACTTCCAT\n",
        "output": "1\n"
      }
    ]
  },
  "737": {
    "id": 737,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=737",
    "source": {
      "sourceString": "2017 US Open Bronze",
      "year": 2017,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Modern Art",
      "place": 3,
      "name": "Modern Art"
    },
    "input": "art.in",
    "output": "art.out",
    "samples": [
      {
        "input": "4\n2230\n2737\n2777\n0000\n",
        "output": "1\n"
      }
    ]
  },
  "738": {
    "id": 738,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=738",
    "source": {
      "sourceString": "2017 US Open Silver",
      "year": 2017,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Paired Up",
      "place": 1,
      "name": "Paired Up"
    },
    "input": "pairup.in",
    "output": "pairup.out",
    "samples": [
      {
        "input": "3\n1 8\n2 5\n1 2\n",
        "output": "10\n"
      }
    ]
  },
  "739": {
    "id": 739,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=739",
    "source": {
      "sourceString": "2017 US Open Silver",
      "year": 2017,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Bovine Genomics",
      "place": 2,
      "name": "Bovine Genomics"
    },
    "input": "cownomics.in",
    "output": "cownomics.out",
    "samples": [
      {
        "input": "3 8\nAATCCCAT\nGATTGCAA\nGGTCGCAA\nACTCCCAG\nACTCGCAT\nACTTCCAT\n",
        "output": "22\n"
      }
    ]
  },
  "740": {
    "id": 740,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=740",
    "source": {
      "sourceString": "2017 US Open Silver",
      "year": 2017,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Where's Bessie?",
      "place": 3,
      "name": "Where's Bessie?"
    },
    "input": "where.in",
    "output": "where.out",
    "samples": [
      {
        "input": "4\nABBC\nBBBC\nAABB\nABBC\n",
        "output": "2\n"
      }
    ]
  },
  "741": {
    "id": 741,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=741",
    "source": {
      "sourceString": "2017 US Open Gold",
      "year": 2017,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bovine Genomics",
      "place": 1,
      "name": "Bovine Genomics"
    },
    "input": "cownomics.in",
    "output": "cownomics.out",
    "samples": [
      {
        "input": "3 8\nAATCCCAT\nACTTGCAA\nGGTCGCAA\nACTCCCAG\nACTCGCAT\nACTTCCAT\n",
        "output": "4\n"
      }
    ]
  },
  "742": {
    "id": 742,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=742",
    "source": {
      "sourceString": "2017 US Open Gold",
      "year": 2017,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Modern Art",
      "place": 2,
      "name": "Modern Art"
    },
    "input": "art.in",
    "output": "art.out",
    "samples": [
      {
        "input": "4\n2 2 3 0\n2 7 3 7\n2 7 7 7\n0 5 5 5\n",
        "output": "3\n"
      }
    ]
  },
  "743": {
    "id": 743,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=743",
    "source": {
      "sourceString": "2017 US Open Gold",
      "year": 2017,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Modern Art 2",
      "place": 3,
      "name": "Modern Art 2"
    },
    "input": "art2.in",
    "output": "art2.out",
    "samples": [
      {
        "input": "7\n0\n1\n4\n5\n1\n3\n3\n",
        "output": "2\n"
      }
    ]
  },
  "744": {
    "id": 744,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=744",
    "source": {
      "sourceString": "2017 US Open Platinum",
      "year": 2017,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Modern Art",
      "place": 1,
      "name": "Modern Art"
    },
    "input": "art.in",
    "output": "art.out",
    "samples": [
      {
        "input": "4\n2 2 3 0\n2 7 3 7\n2 7 7 7\n0 0 0 0\n",
        "output": "14\n"
      }
    ]
  },
  "745": {
    "id": 745,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=745",
    "source": {
      "sourceString": "2017 US Open Platinum",
      "year": 2017,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Switch Grass",
      "place": 2,
      "name": "Switch Grass"
    },
    "input": "grass.in",
    "output": "grass.out",
    "samples": [
      {
        "input": "3 2 3 4\n1 2 3\n2 3 1\n1 1 2\n3 3\n2 3\n1 2\n2 2\n",
        "output": "1\n3\n3\n1\n"
      }
    ]
  },
  "746": {
    "id": 746,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=746",
    "source": {
      "sourceString": "2017 US Open Platinum",
      "year": 2017,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. COWBASIC",
      "place": 3,
      "name": "COWBASIC"
    },
    "input": "cowbasic.in",
    "output": "cowbasic.out",
    "samples": [
      {
        "input": "x = 1\n10 MOO {\n  x = ( x ) + ( x )\n}\nRETURN x\n",
        "output": "1024\n"
      },
      {
        "input": "n = 1\nnsq = 1\n100000 MOO {\n  100000 MOO {\n    nsq = ( nsq ) + ( ( n ) + ( ( n ) + ( 1 ) ) )\n    n = ( n ) + ( 1 )\n  }\n}\nRETURN nsq\n",
        "output": "4761\n"
      }
    ]
  },
  "759": {
    "id": 759,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=759",
    "source": {
      "sourceString": "2017 December Bronze",
      "year": 2017,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Blocked Billboard",
      "place": 1,
      "name": "Blocked Billboard"
    },
    "input": "billboard.in",
    "output": "billboard.out",
    "samples": [
      {
        "input": "1 2 3 5\n6 0 10 4\n2 1 8 3\n",
        "output": "17\n"
      }
    ]
  },
  "760": {
    "id": 760,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=760",
    "source": {
      "sourceString": "2017 December Bronze",
      "year": 2017,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. The Bovine Shuffle",
      "place": 2,
      "name": "The Bovine Shuffle"
    },
    "input": "shuffle.in",
    "output": "shuffle.out",
    "samples": [
      {
        "input": "5\n1 3 4 5 2\n1234567 2222222 3333333 4444444 5555555\n",
        "output": "1234567\n5555555\n2222222\n3333333\n4444444\n"
      }
    ]
  },
  "761": {
    "id": 761,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=761",
    "source": {
      "sourceString": "2017 December Bronze",
      "year": 2017,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Milk Measurement",
      "place": 3,
      "name": "Milk Measurement"
    },
    "input": "measurement.in",
    "output": "measurement.out",
    "samples": [
      {
        "input": "4\n7 Mildred +3\n4 Elsie -1\n9 Mildred -1\n1 Bessie +2\n",
        "output": "3\n"
      }
    ]
  },
  "762": {
    "id": 762,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=762",
    "source": {
      "sourceString": "2017 December Silver",
      "year": 2017,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. My Cow Ate My Homework",
      "place": 1,
      "name": "My Cow Ate My Homework"
    },
    "input": "homework.in",
    "output": "homework.out",
    "samples": [
      {
        "input": "5\n3 1 9 2 7\n",
        "output": "2\n"
      }
    ]
  },
  "763": {
    "id": 763,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=763",
    "source": {
      "sourceString": "2017 December Silver",
      "year": 2017,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Milk Measurement",
      "place": 2,
      "name": "Milk Measurement"
    },
    "input": "measurement.in",
    "output": "measurement.out",
    "samples": [
      {
        "input": "4 10\n7 3 +3\n4 2 -1\n9 3 -1\n1 1 +2\n",
        "output": "3\n"
      }
    ]
  },
  "764": {
    "id": 764,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=764",
    "source": {
      "sourceString": "2017 December Silver",
      "year": 2017,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The Bovine Shuffle",
      "place": 3,
      "name": "The Bovine Shuffle"
    },
    "input": "shuffle.in",
    "output": "shuffle.out",
    "samples": [
      {
        "input": "4\n3 2 1 3\n",
        "output": "3\n"
      }
    ]
  },
  "765": {
    "id": 765,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=765",
    "source": {
      "sourceString": "2017 December Gold",
      "year": 2017,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. A Pie for a Pie",
      "place": 1,
      "name": "A Pie for a Pie"
    },
    "input": "piepie.in",
    "output": "piepie.out",
    "samples": [
      {
        "input": "2 1\n1 1\n5 0\n4 2\n1 4\n",
        "output": "3\n1\n"
      }
    ]
  },
  "766": {
    "id": 766,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=766",
    "source": {
      "sourceString": "2017 December Gold",
      "year": 2017,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Barn Painting",
      "place": 2,
      "name": "Barn Painting"
    },
    "input": "barnpainting.in",
    "output": "barnpainting.out",
    "samples": [
      {
        "input": "4 1\n1 2\n1 3\n1 4\n4 3\n",
        "output": "8\n"
      }
    ]
  },
  "767": {
    "id": 767,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=767",
    "source": {
      "sourceString": "2017 December Gold",
      "year": 2017,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Haybale Feast",
      "place": 3,
      "name": "Haybale Feast"
    },
    "input": "hayfeast.in",
    "output": "hayfeast.out",
    "samples": [
      {
        "input": "5 10\n4 10\n6 15\n3 5\n4 9\n3 6\n",
        "output": "9\n"
      }
    ]
  },
  "768": {
    "id": 768,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=768",
    "source": {
      "sourceString": "2017 December Platinum",
      "year": 2017,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Standing Out from the Herd",
      "place": 1,
      "name": "Standing Out from the Herd"
    },
    "input": "standingout.in",
    "output": "standingout.out",
    "samples": [
      {
        "input": "3\namy\ntommy\nbessie\n",
        "output": "3\n11\n19\n"
      }
    ]
  },
  "769": {
    "id": 769,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=769",
    "source": {
      "sourceString": "2017 December Platinum",
      "year": 2017,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Push a Box",
      "place": 2,
      "name": "Push a Box"
    },
    "input": "pushabox.in",
    "output": "pushabox.out",
    "samples": [
      {
        "input": "5 5 4\n##.##\n##.##\nA.B..\n##.##\n##.##\n3 2\n3 5\n1 3\n5 3\n",
        "output": "NO\nYES\nNO\nNO\n"
      }
    ]
  },
  "770": {
    "id": 770,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=770",
    "source": {
      "sourceString": "2017 December Platinum",
      "year": 2017,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Greedy Gift Takers",
      "place": 3,
      "name": "Greedy Gift Takers"
    },
    "input": "greedy.in",
    "output": "greedy.out",
    "samples": [
      {
        "input": "3\n1 2 0\n",
        "output": "1\n"
      }
    ]
  },
  "783": {
    "id": 783,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=783",
    "source": {
      "sourceString": "2018 January Bronze",
      "year": 2018,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Blocked Billboard II",
      "place": 1,
      "name": "Blocked Billboard II"
    },
    "input": "billboard.in",
    "output": "billboard.out",
    "samples": [
      {
        "input": "2 1 7 4\n5 -1 10 3\n",
        "output": "15\n"
      }
    ]
  },
  "784": {
    "id": 784,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=784",
    "source": {
      "sourceString": "2018 January Bronze",
      "year": 2018,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Lifeguards",
      "place": 2,
      "name": "Lifeguards"
    },
    "input": "lifeguards.in",
    "output": "lifeguards.out",
    "samples": [
      {
        "input": "3\n5 9\n1 4\n3 7\n",
        "output": "7\n"
      }
    ]
  },
  "785": {
    "id": 785,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=785",
    "source": {
      "sourceString": "2018 January Bronze",
      "year": 2018,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Out of Place",
      "place": 3,
      "name": "Out of Place"
    },
    "input": "outofplace.in",
    "output": "outofplace.out",
    "samples": [
      {
        "input": "6\n2\n4\n7\n7\n9\n3\n",
        "output": "3\n"
      }
    ]
  },
  "786": {
    "id": 786,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=786",
    "source": {
      "sourceString": "2018 January Silver",
      "year": 2018,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Lifeguards",
      "place": 1,
      "name": "Lifeguards"
    },
    "input": "lifeguards.in",
    "output": "lifeguards.out",
    "samples": [
      {
        "input": "3\n5 9\n1 4\n3 7\n",
        "output": "7\n"
      }
    ]
  },
  "787": {
    "id": 787,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=787",
    "source": {
      "sourceString": "2018 January Silver",
      "year": 2018,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Rental Service",
      "place": 2,
      "name": "Rental Service"
    },
    "input": "rental.in",
    "output": "rental.out",
    "samples": [
      {
        "input": "5 3 4\n6\n2\n4\n7\n1\n10 25\n2 10\n15 15\n250\n80\n100\n40\n",
        "output": "725\n"
      }
    ]
  },
  "788": {
    "id": 788,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=788",
    "source": {
      "sourceString": "2018 January Silver",
      "year": 2018,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. MooTube",
      "place": 3,
      "name": "MooTube"
    },
    "input": "mootube.in",
    "output": "mootube.out",
    "samples": [
      {
        "input": "4 3\n1 2 3\n2 3 2\n2 4 4\n1 2\n4 1\n3 1\n",
        "output": "3\n0\n2\n"
      }
    ]
  },
  "789": {
    "id": 789,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=789",
    "source": {
      "sourceString": "2018 January Gold",
      "year": 2018,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. MooTube",
      "place": 1,
      "name": "MooTube"
    },
    "input": "mootube.in",
    "output": "mootube.out",
    "samples": [
      {
        "input": "4 3\n1 2 3\n2 3 2\n2 4 4\n1 2\n4 1\n3 1\n",
        "output": "3\n0\n2\n"
      }
    ]
  },
  "790": {
    "id": 790,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=790",
    "source": {
      "sourceString": "2018 January Gold",
      "year": 2018,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow at Large",
      "place": 2,
      "name": "Cow at Large"
    },
    "input": "atlarge.in",
    "output": "atlarge.out",
    "samples": [
      {
        "input": "7 1\n1 2\n1 3\n3 4\n3 5\n4 6\n5 7\n",
        "output": "3\n"
      }
    ]
  },
  "791": {
    "id": 791,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=791",
    "source": {
      "sourceString": "2018 January Gold",
      "year": 2018,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Stamp Painting",
      "place": 3,
      "name": "Stamp Painting"
    },
    "input": "spainting.in",
    "output": "spainting.out",
    "samples": [
      {
        "input": "3 2 2\n",
        "output": "6\n"
      }
    ]
  },
  "792": {
    "id": 792,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=792",
    "source": {
      "sourceString": "2018 January Platinum",
      "year": 2018,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Lifeguards",
      "place": 1,
      "name": "Lifeguards"
    },
    "input": "lifeguards.in",
    "output": "lifeguards.out",
    "samples": [
      {
        "input": "3 2\n1 8\n7 15\n2 14\n",
        "output": "12\n"
      }
    ]
  },
  "793": {
    "id": 793,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=793",
    "source": {
      "sourceString": "2018 January Platinum",
      "year": 2018,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow at Large",
      "place": 2,
      "name": "Cow at Large"
    },
    "input": "atlarge.in",
    "output": "atlarge.out",
    "samples": [
      {
        "input": "7\n1 2\n1 3\n3 4\n3 5\n4 6\n5 7\n",
        "output": "3\n1\n3\n3\n3\n1\n1\n"
      }
    ]
  },
  "794": {
    "id": 794,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=794",
    "source": {
      "sourceString": "2018 January Platinum",
      "year": 2018,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Sprinklers",
      "place": 3,
      "name": "Sprinklers"
    },
    "input": "sprinklers.in",
    "output": "sprinklers.out",
    "samples": [
      {
        "input": "5\n0 4\n1 1\n2 2\n3 0\n4 3\n",
        "output": "21\n"
      }
    ]
  },
  "807": {
    "id": 807,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=807",
    "source": {
      "sourceString": "2018 February Bronze",
      "year": 2018,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Teleportation",
      "place": 1,
      "name": "Teleportation"
    },
    "input": "teleport.in",
    "output": "teleport.out",
    "samples": [
      {
        "input": "3 10 8 2\n",
        "output": "3\n"
      }
    ]
  },
  "808": {
    "id": 808,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=808",
    "source": {
      "sourceString": "2018 February Bronze",
      "year": 2018,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Hoofball",
      "place": 2,
      "name": "Hoofball"
    },
    "input": "hoofball.in",
    "output": "hoofball.out",
    "samples": [
      {
        "input": "5\n7 1 3 11 4\n",
        "output": "2\n"
      }
    ]
  },
  "809": {
    "id": 809,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=809",
    "source": {
      "sourceString": "2018 February Bronze",
      "year": 2018,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Taming the Herd",
      "place": 3,
      "name": "Taming the Herd"
    },
    "input": "taming.in",
    "output": "taming.out",
    "samples": [
      {
        "input": "4\n-1 -1 -1 1\n",
        "output": "2 3\n"
      }
    ]
  },
  "810": {
    "id": 810,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=810",
    "source": {
      "sourceString": "2018 February Silver",
      "year": 2018,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Rest Stops",
      "place": 1,
      "name": "Rest Stops"
    },
    "input": "reststops.in",
    "output": "reststops.out",
    "samples": [
      {
        "input": "10 2 4 3\n7 2\n8 1\n",
        "output": "15\n"
      }
    ]
  },
  "811": {
    "id": 811,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=811",
    "source": {
      "sourceString": "2018 February Silver",
      "year": 2018,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Snow Boots",
      "place": 2,
      "name": "Snow Boots"
    },
    "input": "snowboots.in",
    "output": "snowboots.out",
    "samples": [
      {
        "input": "10 4\n0 2 8 3 6 7 5 1 4 0\n2 3\n4 2\n3 4\n7 1\n",
        "output": "2\n"
      }
    ]
  },
  "812": {
    "id": 812,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=812",
    "source": {
      "sourceString": "2018 February Silver",
      "year": 2018,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Teleportation",
      "place": 3,
      "name": "Teleportation"
    },
    "input": "teleport.in",
    "output": "teleport.out",
    "samples": [
      {
        "input": "3\n-5 -7\n-3 10\n-2 7\n",
        "output": "10\n"
      }
    ]
  },
  "813": {
    "id": 813,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=813",
    "source": {
      "sourceString": "2018 February Gold",
      "year": 2018,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Snow Boots",
      "place": 1,
      "name": "Snow Boots"
    },
    "input": "snowboots.in",
    "output": "snowboots.out",
    "samples": [
      {
        "input": "8 7\n0 3 8 5 6 9 0 0\n0 5\n0 6\n6 2\n8 1\n10 1\n5 3\n150 7\n",
        "output": "0\n1\n1\n0\n1\n1\n1\n"
      }
    ]
  },
  "814": {
    "id": 814,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=814",
    "source": {
      "sourceString": "2018 February Gold",
      "year": 2018,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Directory Traversal",
      "place": 2,
      "name": "Directory Traversal"
    },
    "input": "dirtraverse.in",
    "output": "dirtraverse.out",
    "samples": [
      {
        "input": "8\nbessie 3 2 6 8\nfolder1 2 3 4\nfile1 0\nfolder2 1 5\nfile2 0\nfolder3 1 7\nfile3 0\nfile4 0\n",
        "output": "42\n"
      }
    ]
  },
  "815": {
    "id": 815,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=815",
    "source": {
      "sourceString": "2018 February Gold",
      "year": 2018,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Taming the Herd",
      "place": 3,
      "name": "Taming the Herd"
    },
    "input": "taming.in",
    "output": "taming.out",
    "samples": [
      {
        "input": "6\n1 1 2 0 0 1\n",
        "output": "4\n2\n1\n2\n3\n4\n"
      }
    ]
  },
  "816": {
    "id": 816,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=816",
    "source": {
      "sourceString": "2018 February Platinum",
      "year": 2018,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Slingshot",
      "place": 1,
      "name": "Slingshot"
    },
    "input": "slingshot.in",
    "output": "slingshot.out",
    "samples": [
      {
        "input": "2 3\n0 10 1\n13 8 2\n1 12\n5 2\n20 7\n",
        "output": "4\n3\n10\n"
      }
    ]
  },
  "817": {
    "id": 817,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=817",
    "source": {
      "sourceString": "2018 February Platinum",
      "year": 2018,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. New Barns",
      "place": 2,
      "name": "New Barns"
    },
    "input": "newbarn.in",
    "output": "newbarn.out",
    "samples": [
      {
        "input": "7\nB -1\nQ 1\nB 1\nB 2\nQ 3\nB 2\nQ 2\n",
        "output": "0\n2\n1\n"
      }
    ]
  },
  "818": {
    "id": 818,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=818",
    "source": {
      "sourceString": "2018 February Platinum",
      "year": 2018,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Gymnasts",
      "place": 3,
      "name": "Cow Gymnasts"
    },
    "input": "gymnasts.in",
    "output": "gymnasts.out",
    "samples": [
      {
        "input": "4\n",
        "output": "6\n"
      }
    ]
  },
  "831": {
    "id": 831,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=831",
    "source": {
      "sourceString": "2018 US Open Bronze",
      "year": 2018,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Team Tic Tac Toe",
      "place": 1,
      "name": "Team Tic Tac Toe"
    },
    "input": "tttt.in",
    "output": "tttt.out",
    "samples": [
      {
        "input": "COW\nXXO\nABC\n",
        "output": "0\n2\n"
      }
    ]
  },
  "832": {
    "id": 832,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=832",
    "source": {
      "sourceString": "2018 US Open Bronze",
      "year": 2018,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Milking Order",
      "place": 2,
      "name": "Milking Order"
    },
    "input": "milkorder.in",
    "output": "milkorder.out",
    "samples": [
      {
        "input": "6 3 2\n4 5 6\n5 3\n3 1\n",
        "output": "4\n"
      }
    ]
  },
  "833": {
    "id": 833,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=833",
    "source": {
      "sourceString": "2018 US Open Bronze",
      "year": 2018,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Family Tree",
      "place": 3,
      "name": "Family Tree"
    },
    "input": "family.in",
    "output": "family.out",
    "samples": [
      {
        "input": "7 AA BB\nMOTHER AA\nGGMOTHER BB\nMOTHER SISTER\nGMOTHER MOTHER\nGMOTHER AUNT\nAUNT COUSIN\nGGMOTHER GMOTHER\n",
        "output": "BB is the great-aunt of AA\n"
      }
    ]
  },
  "834": {
    "id": 834,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=834",
    "source": {
      "sourceString": "2018 US Open Silver",
      "year": 2018,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Out of Sorts",
      "place": 1,
      "name": "Out of Sorts"
    },
    "input": "sort.in",
    "output": "sort.out",
    "samples": [
      {
        "input": "5\n1\n5\n3\n8\n2\n",
        "output": "4\n"
      }
    ]
  },
  "835": {
    "id": 835,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=835",
    "source": {
      "sourceString": "2018 US Open Silver",
      "year": 2018,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Lemonade Line",
      "place": 2,
      "name": "Lemonade Line"
    },
    "input": "lemonade.in",
    "output": "lemonade.out",
    "samples": [
      {
        "input": "5\n7 1 400 2 2\n",
        "output": "3\n"
      }
    ]
  },
  "836": {
    "id": 836,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=836",
    "source": {
      "sourceString": "2018 US Open Silver",
      "year": 2018,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Multiplayer Moo",
      "place": 3,
      "name": "Multiplayer Moo"
    },
    "input": "multimoo.in",
    "output": "multimoo.out",
    "samples": [
      {
        "input": "4\n2 3 9 3\n4 9 9 1\n9 9 1 7\n2 1 1 9\n",
        "output": "5\n10\n"
      }
    ]
  },
  "837": {
    "id": 837,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=837",
    "source": {
      "sourceString": "2018 US Open Gold",
      "year": 2018,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Out of Sorts",
      "place": 1,
      "name": "Out of Sorts"
    },
    "input": "sort.in",
    "output": "sort.out",
    "samples": [
      {
        "input": "5\n1\n8\n5\n3\n2\n",
        "output": "2\n"
      }
    ]
  },
  "838": {
    "id": 838,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=838",
    "source": {
      "sourceString": "2018 US Open Gold",
      "year": 2018,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Milking Order",
      "place": 2,
      "name": "Milking Order"
    },
    "input": "milkorder.in",
    "output": "milkorder.out",
    "samples": [
      {
        "input": "4 3\n3 1 2 3\n2 4 2\n3 3 4 1\n",
        "output": "1 4 2 3\n"
      }
    ]
  },
  "839": {
    "id": 839,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=839",
    "source": {
      "sourceString": "2018 US Open Gold",
      "year": 2018,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Talent Show",
      "place": 3,
      "name": "Talent Show"
    },
    "input": "talent.in",
    "output": "talent.out",
    "samples": [
      {
        "input": "3 15\n20 21\n10 11\n30 31\n",
        "output": "1066\n"
      }
    ]
  },
  "840": {
    "id": 840,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=840",
    "source": {
      "sourceString": "2018 US Open Platinum",
      "year": 2018,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Out of Sorts",
      "place": 1,
      "name": "Out of Sorts"
    },
    "input": "sort.in",
    "output": "sort.out",
    "samples": [
      {
        "input": "7\n20\n2\n3\n4\n9\n8\n7\n",
        "output": "12\n"
      }
    ]
  },
  "841": {
    "id": 841,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=841",
    "source": {
      "sourceString": "2018 US Open Platinum",
      "year": 2018,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Train Tracking",
      "place": 2,
      "name": "Train Tracking"
    },
    "input": "none",
    "output": "none",
    "samples": [
      {
        "input": "10 3\n5 7 9 2 0 1 7 4 3 6\n",
        "output": "5\n2\n0\n0\n0\n1\n3\n3\n"
      }
    ]
  },
  "842": {
    "id": 842,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=842",
    "source": {
      "sourceString": "2018 US Open Platinum",
      "year": 2018,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Disruption",
      "place": 3,
      "name": "Disruption"
    },
    "input": "disrupt.in",
    "output": "disrupt.out",
    "samples": [
      {
        "input": "6 3\n1 2\n1 3\n4 1\n4 5\n6 5\n2 3 7\n3 6 8\n6 4 5\n",
        "output": "7\n7\n8\n5\n5\n"
      }
    ]
  },
  "855": {
    "id": 855,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=855",
    "source": {
      "sourceString": "2018 December Bronze",
      "year": 2018,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Mixing Milk",
      "place": 1,
      "name": "Mixing Milk"
    },
    "input": "mixmilk.in",
    "output": "mixmilk.out",
    "samples": [
      {
        "input": "10 3\n11 4\n12 5\n",
        "output": "0\n10\n2\n"
      }
    ]
  },
  "856": {
    "id": 856,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=856",
    "source": {
      "sourceString": "2018 December Bronze",
      "year": 2018,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. The Bucket List",
      "place": 2,
      "name": "The Bucket List"
    },
    "input": "blist.in",
    "output": "blist.out",
    "samples": [
      {
        "input": "3\n4 10 1\n8 13 3\n2 6 2\n",
        "output": "4\n"
      }
    ]
  },
  "857": {
    "id": 857,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=857",
    "source": {
      "sourceString": "2018 December Bronze",
      "year": 2018,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Back and Forth",
      "place": 3,
      "name": "Back and Forth"
    },
    "input": "backforth.in",
    "output": "backforth.out",
    "samples": [
      {
        "input": "1 1 1 1 1 1 1 1 1 2\n5 5 5 5 5 5 5 5 5 5\n",
        "output": "5\n"
      }
    ]
  },
  "858": {
    "id": 858,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=858",
    "source": {
      "sourceString": "2018 December Silver",
      "year": 2018,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Convention",
      "place": 1,
      "name": "Convention"
    },
    "input": "convention.in",
    "output": "convention.out",
    "samples": [
      {
        "input": "6 3 2\n1 1 10 14 4 3\n",
        "output": "4\n"
      }
    ]
  },
  "859": {
    "id": 859,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=859",
    "source": {
      "sourceString": "2018 December Silver",
      "year": 2018,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Convention II",
      "place": 2,
      "name": "Convention II"
    },
    "input": "convention2.in",
    "output": "convention2.out",
    "samples": [
      {
        "input": "5\n25 3\n105 30\n20 50\n10 17\n100 10\n",
        "output": "10\n"
      }
    ]
  },
  "860": {
    "id": 860,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=860",
    "source": {
      "sourceString": "2018 December Silver",
      "year": 2018,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Mooyo Mooyo",
      "place": 3,
      "name": "Mooyo Mooyo"
    },
    "input": "mooyomooyo.in",
    "output": "mooyomooyo.out",
    "samples": [
      {
        "input": "6 3\n0000000000\n0000000300\n0054000300\n1054502230\n2211122220\n1111111223\n",
        "output": "0000000000\n0000000000\n0000000000\n0000000000\n1054000000\n2254500000\n"
      }
    ]
  },
  "861": {
    "id": 861,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=861",
    "source": {
      "sourceString": "2018 December Gold",
      "year": 2018,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Fine Dining",
      "place": 1,
      "name": "Fine Dining"
    },
    "input": "dining.in",
    "output": "dining.out",
    "samples": [
      {
        "input": "4 5 1\n1 4 10\n2 1 20\n4 2 3\n2 3 5\n4 3 2\n2 7\n",
        "output": "1\n1\n1\n"
      }
    ]
  },
  "862": {
    "id": 862,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=862",
    "source": {
      "sourceString": "2018 December Gold",
      "year": 2018,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cowpatibility",
      "place": 2,
      "name": "Cowpatibility"
    },
    "input": "cowpatibility.in",
    "output": "cowpatibility.out",
    "samples": [
      {
        "input": "4\n1 2 3 4 5\n1 2 3 10 8\n10 9 8 7 6\n50 60 70 80 90\n",
        "output": "4\n"
      }
    ]
  },
  "863": {
    "id": 863,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=863",
    "source": {
      "sourceString": "2018 December Gold",
      "year": 2018,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Teamwork",
      "place": 3,
      "name": "Teamwork"
    },
    "input": "teamwork.in",
    "output": "teamwork.out",
    "samples": [
      {
        "input": "7 3\n1\n15\n7\n9\n2\n5\n10\n",
        "output": "84\n"
      }
    ]
  },
  "864": {
    "id": 864,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=864",
    "source": {
      "sourceString": "2018 December Platinum",
      "year": 2018,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Balance Beam",
      "place": 1,
      "name": "Balance Beam"
    },
    "input": "balance.in",
    "output": "balance.out",
    "samples": [
      {
        "input": "2\n1\n3\n",
        "output": "150000\n300000\n"
      }
    ]
  },
  "865": {
    "id": 865,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=865",
    "source": {
      "sourceString": "2018 December Platinum",
      "year": 2018,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Sort It Out",
      "place": 2,
      "name": "Sort It Out"
    },
    "input": "itout.in",
    "output": "itout.out",
    "samples": [
      {
        "input": "4 1\n4 2 1 3\n",
        "output": "2\n1\n4\n"
      }
    ]
  },
  "866": {
    "id": 866,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=866",
    "source": {
      "sourceString": "2018 December Platinum",
      "year": 2018,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The Cow Gathering",
      "place": 3,
      "name": "The Cow Gathering"
    },
    "input": "gathering.in",
    "output": "gathering.out",
    "samples": [
      {
        "input": "5 1\n1 2\n2 3\n3 4\n4 5\n2 4\n",
        "output": "0\n0\n1\n1\n1\n"
      }
    ]
  },
  "891": {
    "id": 891,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=891",
    "source": {
      "sourceString": "2019 January Bronze",
      "year": 2019,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Shell Game",
      "place": 1,
      "name": "Shell Game"
    },
    "input": "shell.in",
    "output": "shell.out",
    "samples": [
      {
        "input": "3\n1 2 1\n3 2 1\n1 3 1\n",
        "output": "2\n"
      }
    ]
  },
  "892": {
    "id": 892,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=892",
    "source": {
      "sourceString": "2019 January Bronze",
      "year": 2019,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Sleepy Cow Sorting",
      "place": 2,
      "name": "Sleepy Cow Sorting"
    },
    "input": "sleepy.in",
    "output": "sleepy.out",
    "samples": [
      {
        "input": "4\n1 2 4 3\n",
        "output": "3\n"
      }
    ]
  },
  "893": {
    "id": 893,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=893",
    "source": {
      "sourceString": "2019 January Bronze",
      "year": 2019,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Guess the Animal",
      "place": 3,
      "name": "Guess the Animal"
    },
    "input": "guess.in",
    "output": "guess.out",
    "samples": [
      {
        "input": "4\nbird 2 flies eatsworms\ncow 4 eatsgrass isawesome makesmilk goesmoo\nsheep 1 eatsgrass\ngoat 2 makesmilk eatsgrass\n",
        "output": "3\n"
      }
    ]
  },
  "894": {
    "id": 894,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=894",
    "source": {
      "sourceString": "2019 January Silver",
      "year": 2019,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Grass Planting",
      "place": 1,
      "name": "Grass Planting"
    },
    "input": "planting.in",
    "output": "planting.out",
    "samples": [
      {
        "input": "4\n1 2\n4 3\n2 3\n",
        "output": "3\n"
      }
    ]
  },
  "895": {
    "id": 895,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=895",
    "source": {
      "sourceString": "2019 January Silver",
      "year": 2019,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Icy Perimeter",
      "place": 2,
      "name": "Icy Perimeter"
    },
    "input": "perimeter.in",
    "output": "perimeter.out",
    "samples": [
      {
        "input": "6\n##....\n....#.\n.#..#.\n.#####\n...###\n....##\n",
        "output": "13 22\n"
      }
    ]
  },
  "896": {
    "id": 896,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=896",
    "source": {
      "sourceString": "2019 January Silver",
      "year": 2019,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Mountain View",
      "place": 3,
      "name": "Mountain View"
    },
    "input": "mountains.in",
    "output": "mountains.out",
    "samples": [
      {
        "input": "3\n4 6\n7 2\n2 5\n",
        "output": "2\n"
      }
    ]
  },
  "897": {
    "id": 897,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=897",
    "source": {
      "sourceString": "2019 January Gold",
      "year": 2019,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Poetry",
      "place": 1,
      "name": "Cow Poetry"
    },
    "input": "poetry.in",
    "output": "poetry.out",
    "samples": [
      {
        "input": "3 3 10\n3 1\n4 1\n3 2\nA\nB\nA\n",
        "output": "960\n"
      }
    ]
  },
  "898": {
    "id": 898,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=898",
    "source": {
      "sourceString": "2019 January Gold",
      "year": 2019,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Sleepy Cow Sorting",
      "place": 2,
      "name": "Sleepy Cow Sorting"
    },
    "input": "sleepy.in",
    "output": "sleepy.out",
    "samples": [
      {
        "input": "4\n1 2 4 3\n",
        "output": "3\n2 2 3\n"
      }
    ]
  },
  "899": {
    "id": 899,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=899",
    "source": {
      "sourceString": "2019 January Gold",
      "year": 2019,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Shortcut",
      "place": 3,
      "name": "Shortcut"
    },
    "input": "shortcut.in",
    "output": "shortcut.out",
    "samples": [
      {
        "input": "5 6 2\n1 2 3 4 5\n1 2 5\n1 3 3\n2 4 3\n3 4 5\n4 5 2\n3 5 7\n",
        "output": "40\n"
      }
    ]
  },
  "900": {
    "id": 900,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=900",
    "source": {
      "sourceString": "2019 January Platinum",
      "year": 2019,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Redistricting",
      "place": 1,
      "name": "Redistricting"
    },
    "input": "redistricting.in",
    "output": "redistricting.out",
    "samples": [
      {
        "input": "7 2\nHGHGGHG\n",
        "output": "3\n"
      }
    ]
  },
  "901": {
    "id": 901,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=901",
    "source": {
      "sourceString": "2019 January Platinum",
      "year": 2019,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Exercise Route",
      "place": 2,
      "name": "Exercise Route"
    },
    "input": "exercise.in",
    "output": "exercise.out",
    "samples": [
      {
        "input": "5 8\n1 2\n1 3\n1 4\n1 5\n2 3\n3 4\n4 5\n5 2\n",
        "output": "4\n"
      }
    ]
  },
  "902": {
    "id": 902,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=902",
    "source": {
      "sourceString": "2019 January Platinum",
      "year": 2019,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Train Tracking 2",
      "place": 3,
      "name": "Train Tracking 2"
    },
    "input": "tracking2.in",
    "output": "tracking2.out",
    "samples": [
      {
        "input": "4 2\n999999998\n999999999\n999999998\n",
        "output": "3\n"
      }
    ]
  },
  "915": {
    "id": 915,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=915",
    "source": {
      "sourceString": "2019 February Bronze",
      "year": 2019,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Sleepy Cow Herding",
      "place": 1,
      "name": "Sleepy Cow Herding"
    },
    "input": "herding.in",
    "output": "herding.out",
    "samples": [
      {
        "input": "4 7 9\n",
        "output": "1\n2\n"
      }
    ]
  },
  "916": {
    "id": 916,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=916",
    "source": {
      "sourceString": "2019 February Bronze",
      "year": 2019,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. The Great Revegetation",
      "place": 2,
      "name": "The Great Revegetation"
    },
    "input": "revegetate.in",
    "output": "revegetate.out",
    "samples": [
      {
        "input": "5 6\n4 1\n4 2\n4 3\n2 5\n1 2\n1 5\n",
        "output": "12133\n"
      }
    ]
  },
  "917": {
    "id": 917,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=917",
    "source": {
      "sourceString": "2019 February Bronze",
      "year": 2019,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Measuring Traffic",
      "place": 3,
      "name": "Measuring Traffic"
    },
    "input": "traffic.in",
    "output": "traffic.out",
    "samples": [
      {
        "input": "4\non 1 1\nnone 10 14\nnone 11 15\noff 2 3\n",
        "output": "10 13\n8 12\n"
      }
    ]
  },
  "918": {
    "id": 918,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=918",
    "source": {
      "sourceString": "2019 February Silver",
      "year": 2019,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Sleepy Cow Herding",
      "place": 1,
      "name": "Sleepy Cow Herding"
    },
    "input": "herding.in",
    "output": "herding.out",
    "samples": [
      {
        "input": "3\n7\n4\n9\n",
        "output": "1\n2\n"
      }
    ]
  },
  "919": {
    "id": 919,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=919",
    "source": {
      "sourceString": "2019 February Silver",
      "year": 2019,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Painting the Barn",
      "place": 2,
      "name": "Painting the Barn"
    },
    "input": "paintbarn.in",
    "output": "paintbarn.out",
    "samples": [
      {
        "input": "3 2\n1 1 5 5\n4 4 7 6\n3 3 8 7\n",
        "output": "8\n"
      }
    ]
  },
  "920": {
    "id": 920,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=920",
    "source": {
      "sourceString": "2019 February Silver",
      "year": 2019,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The Great Revegetation",
      "place": 3,
      "name": "The Great Revegetation"
    },
    "input": "revegetate.in",
    "output": "revegetate.out",
    "samples": [
      {
        "input": "3 2\nS 1 2\nD 3 2\n",
        "output": "10\n"
      }
    ]
  },
  "921": {
    "id": 921,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=921",
    "source": {
      "sourceString": "2019 February Gold",
      "year": 2019,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Land",
      "place": 1,
      "name": "Cow Land"
    },
    "input": "cowland.in",
    "output": "cowland.out",
    "samples": [
      {
        "input": "5 5\n1 2 4 8 16\n1 2\n1 3\n3 4\n3 5\n2 1 5\n1 1 16\n2 3 5\n2 1 5\n2 1 3\n",
        "output": "21\n20\n4\n20\n"
      }
    ]
  },
  "922": {
    "id": 922,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=922",
    "source": {
      "sourceString": "2019 February Gold",
      "year": 2019,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Dishwashing",
      "place": 2,
      "name": "Dishwashing"
    },
    "input": "dishes.in",
    "output": "dishes.out",
    "samples": [
      {
        "input": "5\n4\n5\n2\n3\n1\n",
        "output": "4\n"
      }
    ]
  },
  "923": {
    "id": 923,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=923",
    "source": {
      "sourceString": "2019 February Gold",
      "year": 2019,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Painting the Barn",
      "place": 3,
      "name": "Painting the Barn"
    },
    "input": "paintbarn.in",
    "output": "paintbarn.out",
    "samples": [
      {
        "input": "3 2\n1 1 4 4\n3 3 7 6\n2 2 8 7\n",
        "output": "26\n"
      }
    ]
  },
  "924": {
    "id": 924,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=924",
    "source": {
      "sourceString": "2019 February Platinum",
      "year": 2019,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Dating",
      "place": 1,
      "name": "Cow Dating"
    },
    "input": "cowdate.in",
    "output": "cowdate.out",
    "samples": [
      {
        "input": "3\n300000\n400000\n350000\n",
        "output": "470000\n"
      }
    ]
  },
  "925": {
    "id": 925,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=925",
    "source": {
      "sourceString": "2019 February Platinum",
      "year": 2019,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Moorio Kart",
      "place": 2,
      "name": "Moorio Kart"
    },
    "input": "mooriokart.in",
    "output": "mooriokart.out",
    "samples": [
      {
        "input": "5 3 1 12\n1 2 3\n2 3 4\n4 5 6\n",
        "output": "54\n"
      }
    ]
  },
  "926": {
    "id": 926,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=926",
    "source": {
      "sourceString": "2019 February Platinum",
      "year": 2019,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Mowing Mischief",
      "place": 3,
      "name": "Mowing Mischief"
    },
    "input": "mowing.in",
    "output": "mowing.out",
    "samples": [
      {
        "input": "5 20\n19 1\n2 6\n9 15\n10 3\n13 11\n",
        "output": "117\n"
      }
    ]
  },
  "939": {
    "id": 939,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=939",
    "source": {
      "sourceString": "2019 US Open Bronze",
      "year": 2019,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bucket Brigade",
      "place": 1,
      "name": "Bucket Brigade"
    },
    "input": "buckets.in",
    "output": "buckets.out",
    "samples": [
      {
        "input": "..........\n..........\n..........\n..B.......\n..........\n.....R....\n..........\n..........\n.....L....\n..........\n",
        "output": "7\n"
      }
    ]
  },
  "940": {
    "id": 940,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=940",
    "source": {
      "sourceString": "2019 US Open Bronze",
      "year": 2019,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Milk Factory",
      "place": 2,
      "name": "Milk Factory"
    },
    "input": "factory.in",
    "output": "factory.out",
    "samples": [
      {
        "input": "3\n1 2\n3 2\n",
        "output": "2\n"
      }
    ]
  },
  "941": {
    "id": 941,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=941",
    "source": {
      "sourceString": "2019 US Open Bronze",
      "year": 2019,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cow Evolution",
      "place": 3,
      "name": "Cow Evolution"
    },
    "input": "evolution.in",
    "output": "evolution.out",
    "samples": [
      {
        "input": "4\n2 spots firebreathing\n0\n1 flying\n2 telepathic flying\n",
        "output": "yes\n"
      }
    ]
  },
  "942": {
    "id": 942,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=942",
    "source": {
      "sourceString": "2019 US Open Silver",
      "year": 2019,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Left Out",
      "place": 1,
      "name": "Left Out"
    },
    "input": "leftout.in",
    "output": "leftout.out",
    "samples": [
      {
        "input": "3\nRLR\nRRL\nLLR\n",
        "output": "1 1\n"
      }
    ]
  },
  "943": {
    "id": 943,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=943",
    "source": {
      "sourceString": "2019 US Open Silver",
      "year": 2019,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Steeplechase II",
      "place": 2,
      "name": "Cow Steeplechase II"
    },
    "input": "cowjump.in",
    "output": "cowjump.out",
    "samples": [
      {
        "input": "4\n2 1 6 1\n4 0 1 5\n5 6 5 5\n2 7 1 3\n",
        "output": "2\n"
      }
    ]
  },
  "944": {
    "id": 944,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=944",
    "source": {
      "sourceString": "2019 US Open Silver",
      "year": 2019,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Fence Planning",
      "place": 3,
      "name": "Fence Planning"
    },
    "input": "fenceplan.in",
    "output": "fenceplan.out",
    "samples": [
      {
        "input": "7 5\n0 5\n10 5\n5 0\n5 10\n6 7\n8 6\n8 4\n1 2\n2 3\n3 4\n5 6\n7 6\n",
        "output": "10\n"
      }
    ]
  },
  "945": {
    "id": 945,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=945",
    "source": {
      "sourceString": "2019 US Open Gold",
      "year": 2019,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Snakes",
      "place": 1,
      "name": "Snakes"
    },
    "input": "snakes.in",
    "output": "snakes.out",
    "samples": [
      {
        "input": "6 2\n7 9 8 2 3 2\n",
        "output": "3\n"
      }
    ]
  },
  "946": {
    "id": 946,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=946",
    "source": {
      "sourceString": "2019 US Open Gold",
      "year": 2019,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. I Would Walk 500 Miles",
      "place": 2,
      "name": "I Would Walk 500 Miles"
    },
    "input": "walk.in",
    "output": "walk.out",
    "samples": [
      {
        "input": "3 2\n",
        "output": "2019201769\n"
      }
    ]
  },
  "947": {
    "id": 947,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=947",
    "source": {
      "sourceString": "2019 US Open Gold",
      "year": 2019,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Balancing Inversions",
      "place": 3,
      "name": "Balancing Inversions"
    },
    "input": "balance.in",
    "output": "balance.out",
    "samples": [
      {
        "input": "5\n0 0 0 1 0 1 0 0 0 1\n",
        "output": "1\n"
      }
    ]
  },
  "948": {
    "id": 948,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=948",
    "source": {
      "sourceString": "2019 US Open Platinum",
      "year": 2019,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Tree Boxes",
      "place": 1,
      "name": "Tree Boxes"
    },
    "input": "none",
    "output": "none",
    "samples": []
  },
  "949": {
    "id": 949,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=949",
    "source": {
      "sourceString": "2019 US Open Platinum",
      "year": 2019,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Compound Escape",
      "place": 2,
      "name": "Compound Escape"
    },
    "input": "escape.in",
    "output": "escape.out",
    "samples": [
      {
        "input": "4 3\n1 1\n5 6\n7 8\n1 1\n1 1 1\n2 3 4\n1 1 1\n",
        "output": "10\n"
      }
    ]
  },
  "950": {
    "id": 950,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=950",
    "source": {
      "sourceString": "2019 US Open Platinum",
      "year": 2019,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Valleys",
      "place": 3,
      "name": "Valleys"
    },
    "input": "valleys.in",
    "output": "valleys.out",
    "samples": [
      {
        "input": "3\n1 10 2\n20 100 30\n3 11 50\n",
        "output": "30\n"
      }
    ]
  },
  "963": {
    "id": 963,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=963",
    "source": {
      "sourceString": "2019 December Bronze",
      "year": 2019,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow Gymnastics",
      "place": 1,
      "name": "Cow Gymnastics"
    },
    "input": "gymnastics.in",
    "output": "gymnastics.out",
    "samples": [
      {
        "input": "3 4\n4 1 2 3\n4 1 3 2\n4 2 1 3\n",
        "output": "4\n"
      }
    ]
  },
  "964": {
    "id": 964,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=964",
    "source": {
      "sourceString": "2019 December Bronze",
      "year": 2019,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Where Am I?",
      "place": 2,
      "name": "Where Am I?"
    },
    "input": "whereami.in",
    "output": "whereami.out",
    "samples": [
      {
        "input": "7\nABCDABC\n",
        "output": "4\n"
      }
    ]
  },
  "965": {
    "id": 965,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=965",
    "source": {
      "sourceString": "2019 December Bronze",
      "year": 2019,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Livestock Lineup",
      "place": 3,
      "name": "Livestock Lineup"
    },
    "input": "lineup.in",
    "output": "lineup.out",
    "samples": [
      {
        "input": "3\nButtercup must be milked beside Bella\nBlue must be milked beside Bella\nSue must be milked beside Beatrice\n",
        "output": "Beatrice\nSue\nBelinda\nBessie\nBetsy\nBlue\nBella\nButtercup\n"
      }
    ]
  },
  "966": {
    "id": 966,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=966",
    "source": {
      "sourceString": "2019 December Silver",
      "year": 2019,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. MooBuzz",
      "place": 1,
      "name": "MooBuzz"
    },
    "input": "moobuzz.in",
    "output": "moobuzz.out",
    "samples": [
      {
        "input": "4\n",
        "output": "7\n"
      }
    ]
  },
  "967": {
    "id": 967,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=967",
    "source": {
      "sourceString": "2019 December Silver",
      "year": 2019,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Meetings",
      "place": 2,
      "name": "Meetings"
    },
    "input": "meetings.in",
    "output": "meetings.out",
    "samples": [
      {
        "input": "3 5\n1 1 1\n2 2 -1\n3 3 -1\n",
        "output": "2\n"
      }
    ]
  },
  "968": {
    "id": 968,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=968",
    "source": {
      "sourceString": "2019 December Silver",
      "year": 2019,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Milk Visits",
      "place": 3,
      "name": "Milk Visits"
    },
    "input": "milkvisits.in",
    "output": "milkvisits.out",
    "samples": [
      {
        "input": "5 5\nHHGHG\n1 2\n2 3\n2 4\n1 5\n1 4 H\n1 4 G\n1 3 G\n1 3 H\n5 5 H\n",
        "output": "10110\n"
      }
    ]
  },
  "969": {
    "id": 969,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=969",
    "source": {
      "sourceString": "2019 December Gold",
      "year": 2019,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Milk Pumping",
      "place": 1,
      "name": "Milk Pumping"
    },
    "input": "pump.in",
    "output": "pump.out",
    "samples": [
      {
        "input": "3 2\n2 1 2 4\n2 3 5 3\n",
        "output": "428571\n"
      }
    ]
  },
  "970": {
    "id": 970,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=970",
    "source": {
      "sourceString": "2019 December Gold",
      "year": 2019,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Milk Visits",
      "place": 2,
      "name": "Milk Visits"
    },
    "input": "milkvisits.in",
    "output": "milkvisits.out",
    "samples": [
      {
        "input": "5 5\n1 1 2 1 2\n1 2\n2 3\n2 4\n1 5\n1 4 1\n1 4 2\n1 3 2\n1 3 1\n5 5 1\n",
        "output": "10110\n"
      },
      {
        "input": "6 4\n1 2 3 3 3 3\n1 2\n2 3\n3 4\n2 5\n5 6\n4 6 1\n4 6 2\n4 6 3\n4 6 4\n",
        "output": "0110\n"
      }
    ]
  },
  "971": {
    "id": 971,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=971",
    "source": {
      "sourceString": "2019 December Gold",
      "year": 2019,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Moortal Cowmbat",
      "place": 3,
      "name": "Moortal Cowmbat"
    },
    "input": "cowmbat.in",
    "output": "cowmbat.out",
    "samples": [
      {
        "input": "5 5 2\nabcde\n0 1 4 4 4\n2 0 4 4 4\n6 5 0 3 2\n5 5 5 0 4\n3 7 0 5 0\n",
        "output": "5\n"
      }
    ]
  },
  "972": {
    "id": 972,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=972",
    "source": {
      "sourceString": "2019 December Platinum",
      "year": 2019,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Greedy Pie Eaters",
      "place": 1,
      "name": "Greedy Pie Eaters"
    },
    "input": "pieaters.in",
    "output": "pieaters.out",
    "samples": [
      {
        "input": "2 2\n100 1 2\n100 1 1\n",
        "output": "200\n"
      }
    ]
  },
  "973": {
    "id": 973,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=973",
    "source": {
      "sourceString": "2019 December Platinum",
      "year": 2019,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Bessie's Snow Cow",
      "place": 2,
      "name": "Bessie's Snow Cow"
    },
    "input": "snowcow.in",
    "output": "snowcow.out",
    "samples": [
      {
        "input": "5 18\n1 2\n1 3\n3 4\n3 5\n1 4 1\n2 1\n2 2\n2 3\n2 4\n2 5\n1 5 1\n2 1\n2 2\n2 3\n2 4\n2 5\n1 1 1\n2 1\n2 2\n2 3\n2 4\n2 5\n",
        "output": "1\n0\n1\n1\n0\n2\n0\n2\n1\n1\n5\n1\n3\n1\n1\n"
      }
    ]
  },
  "974": {
    "id": 974,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=974",
    "source": {
      "sourceString": "2019 December Platinum",
      "year": 2019,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Tree Depth",
      "place": 3,
      "name": "Tree Depth"
    },
    "input": "treedepth.in",
    "output": "treedepth.out",
    "samples": [
      {
        "input": "3 0 192603497\n",
        "output": "1 2 3\n"
      },
      {
        "input": "3 1 144408983\n",
        "output": "3 4 4\n"
      }
    ]
  },
  "987": {
    "id": 987,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=987",
    "source": {
      "sourceString": "2020 January Bronze",
      "year": 2020,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Word Processor",
      "place": 1,
      "name": "Word Processor"
    },
    "input": "word.in",
    "output": "word.out",
    "samples": [
      {
        "input": "10 7\nhello my name is Bessie and this is my essay\n",
        "output": "hello my\nname is\nBessie\nand this\nis my\nessay\n"
      }
    ]
  },
  "988": {
    "id": 988,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=988",
    "source": {
      "sourceString": "2020 January Bronze",
      "year": 2020,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Photoshoot",
      "place": 2,
      "name": "Photoshoot"
    },
    "input": "photo.in",
    "output": "photo.out",
    "samples": [
      {
        "input": "5\n4 6 7 6\n",
        "output": "3 1 5 2 4\n"
      }
    ]
  },
  "989": {
    "id": 989,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=989",
    "source": {
      "sourceString": "2020 January Bronze",
      "year": 2020,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Race",
      "place": 3,
      "name": "Race"
    },
    "input": "race.in",
    "output": "race.out",
    "samples": [
      {
        "input": "10 5\n1\n2\n3\n4\n5\n",
        "output": "6\n5\n5\n4\n4\n"
      }
    ]
  },
  "990": {
    "id": 990,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=990",
    "source": {
      "sourceString": "2020 January Silver",
      "year": 2020,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Berry Picking",
      "place": 1,
      "name": "Berry Picking"
    },
    "input": "berries.in",
    "output": "berries.out",
    "samples": [
      {
        "input": "5 4\n3 6 8 4 2\n",
        "output": "8\n"
      }
    ]
  },
  "991": {
    "id": 991,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=991",
    "source": {
      "sourceString": "2020 January Silver",
      "year": 2020,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Loan Repayment",
      "place": 2,
      "name": "Loan Repayment"
    },
    "input": "loan.in",
    "output": "loan.out",
    "samples": [
      {
        "input": "10 3 3\n",
        "output": "2\n"
      }
    ]
  },
  "992": {
    "id": 992,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=992",
    "source": {
      "sourceString": "2020 January Silver",
      "year": 2020,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Wormhole Sort",
      "place": 3,
      "name": "Wormhole Sort"
    },
    "input": "wormsort.in",
    "output": "wormsort.out",
    "samples": [
      {
        "input": "4 4\n3 2 1 4\n1 2 9\n1 3 7\n2 3 10\n2 4 3\n",
        "output": "9\n"
      },
      {
        "input": "4 1\n1 2 3 4\n4 2 13\n",
        "output": "-1\n"
      }
    ]
  },
  "993": {
    "id": 993,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=993",
    "source": {
      "sourceString": "2020 January Gold",
      "year": 2020,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Time is Mooney",
      "place": 1,
      "name": "Time is Mooney"
    },
    "input": "time.in",
    "output": "time.out",
    "samples": [
      {
        "input": "3 3 1\n0 10 20\n1 2\n2 3\n3 1\n",
        "output": "24\n"
      }
    ]
  },
  "994": {
    "id": 994,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=994",
    "source": {
      "sourceString": "2020 January Gold",
      "year": 2020,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Farmer John Solves 3SUM",
      "place": 2,
      "name": "Farmer John Solves 3SUM"
    },
    "input": "threesum.in",
    "output": "threesum.out",
    "samples": [
      {
        "input": "7 3\n2 0 -1 1 -2 3 3\n1 5\n2 4\n1 7\n",
        "output": "2\n1\n4\n"
      }
    ]
  },
  "995": {
    "id": 995,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=995",
    "source": {
      "sourceString": "2020 January Gold",
      "year": 2020,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Springboards",
      "place": 3,
      "name": "Springboards"
    },
    "input": "boards.in",
    "output": "boards.out",
    "samples": [
      {
        "input": "3 2\n0 1 0 2\n1 2 2 3\n",
        "output": "3\n"
      }
    ]
  },
  "996": {
    "id": 996,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=996",
    "source": {
      "sourceString": "2020 January Platinum",
      "year": 2020,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cave Paintings",
      "place": 1,
      "name": "Cave Paintings"
    },
    "input": "cave.in",
    "output": "cave.out",
    "samples": [
      {
        "input": "4 9\n#########\n#...#...#\n#.#...#.#\n#########\n",
        "output": "9\n"
      }
    ]
  },
  "997": {
    "id": 997,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=997",
    "source": {
      "sourceString": "2020 January Platinum",
      "year": 2020,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Non-Decreasing Subsequences",
      "place": 2,
      "name": "Non-Decreasing Subsequences"
    },
    "input": "nondec.in",
    "output": "nondec.out",
    "samples": [
      {
        "input": "5 2\n1 2 1 1 2\n3\n2 3\n4 5\n1 5\n",
        "output": "3\n4\n20\n"
      }
    ]
  },
  "998": {
    "id": 998,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=998",
    "source": {
      "sourceString": "2020 January Platinum",
      "year": 2020,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Falling Portals",
      "place": 3,
      "name": "Falling Portals"
    },
    "input": "falling.in",
    "output": "falling.out",
    "samples": [
      {
        "input": "4\n3 5 10 2\n3 3 2 1\n",
        "output": "7/2\n7/2\n5/1\n-1\n"
      }
    ]
  },
  "1011": {
    "id": 1011,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1011",
    "source": {
      "sourceString": "2020 February Bronze",
      "year": 2020,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Triangles",
      "place": 1,
      "name": "Triangles"
    },
    "input": "triangles.in",
    "output": "triangles.out",
    "samples": [
      {
        "input": "4\n0 0\n0 1\n1 0\n1 2\n",
        "output": "2\n"
      }
    ]
  },
  "1012": {
    "id": 1012,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1012",
    "source": {
      "sourceString": "2020 February Bronze",
      "year": 2020,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Mad Scientist",
      "place": 2,
      "name": "Mad Scientist"
    },
    "input": "breedflip.in",
    "output": "breedflip.out",
    "samples": [
      {
        "input": "7\nGHHHGHH\nHHGGGHH\n",
        "output": "2\n"
      }
    ]
  },
  "1013": {
    "id": 1013,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1013",
    "source": {
      "sourceString": "2020 February Bronze",
      "year": 2020,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Swapity Swap",
      "place": 3,
      "name": "Swapity Swap"
    },
    "input": "swap.in",
    "output": "swap.out",
    "samples": [
      {
        "input": "7 2\n2 5\n3 7\n",
        "output": "1\n2\n4\n3\n5\n7\n6\n"
      }
    ]
  },
  "1014": {
    "id": 1014,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1014",
    "source": {
      "sourceString": "2020 February Silver",
      "year": 2020,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Swapity Swapity Swap",
      "place": 1,
      "name": "Swapity Swapity Swap"
    },
    "input": "swap.in",
    "output": "swap.out",
    "samples": [
      {
        "input": "7 2 2\n2 5\n3 7\n",
        "output": "1\n2\n4\n3\n5\n7\n6\n"
      }
    ]
  },
  "1015": {
    "id": 1015,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1015",
    "source": {
      "sourceString": "2020 February Silver",
      "year": 2020,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Triangles",
      "place": 2,
      "name": "Triangles"
    },
    "input": "triangles.in",
    "output": "triangles.out",
    "samples": [
      {
        "input": "4\n0 0\n0 1\n1 0\n1 2\n",
        "output": "3\n"
      }
    ]
  },
  "1016": {
    "id": 1016,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1016",
    "source": {
      "sourceString": "2020 February Silver",
      "year": 2020,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Clock Tree",
      "place": 3,
      "name": "Clock Tree"
    },
    "input": "clocktree.in",
    "output": "clocktree.out",
    "samples": [
      {
        "input": "4\n11 10 11 11\n1 2\n2 3\n2 4\n",
        "output": "1\n"
      }
    ]
  },
  "1017": {
    "id": 1017,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1017",
    "source": {
      "sourceString": "2020 February Gold",
      "year": 2020,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Timeline",
      "place": 1,
      "name": "Timeline"
    },
    "input": "timeline.in",
    "output": "timeline.out",
    "samples": [
      {
        "input": "4 10 3\n1 2 3 4\n1 2 5\n2 4 2\n3 4 4\n",
        "output": "1\n6\n3\n8\n"
      }
    ]
  },
  "1018": {
    "id": 1018,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1018",
    "source": {
      "sourceString": "2020 February Gold",
      "year": 2020,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Help Yourself",
      "place": 2,
      "name": "Help Yourself"
    },
    "input": "help.in",
    "output": "help.out",
    "samples": [
      {
        "input": "3\n1 6\n2 3\n4 5\n",
        "output": "8\n"
      }
    ]
  },
  "1019": {
    "id": 1019,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1019",
    "source": {
      "sourceString": "2020 February Gold",
      "year": 2020,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Delegation",
      "place": 3,
      "name": "Delegation"
    },
    "input": "deleg.in",
    "output": "deleg.out",
    "samples": [
      {
        "input": "13\n1 2\n2 3\n2 4\n4 5\n2 6\n6 7\n6 8\n8 9\n9 10\n8 11\n11 12\n12 13\n",
        "output": "111000000000\n"
      }
    ]
  },
  "1020": {
    "id": 1020,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1020",
    "source": {
      "sourceString": "2020 February Platinum",
      "year": 2020,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Delegation",
      "place": 1,
      "name": "Delegation"
    },
    "input": "deleg.in",
    "output": "deleg.out",
    "samples": [
      {
        "input": "8\n1 2\n1 3\n1 4\n4 5\n1 6\n6 7\n7 8\n",
        "output": "3\n"
      }
    ]
  },
  "1021": {
    "id": 1021,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1021",
    "source": {
      "sourceString": "2020 February Platinum",
      "year": 2020,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Equilateral Triangles",
      "place": 2,
      "name": "Equilateral Triangles"
    },
    "input": "triangles.in",
    "output": "triangles.out",
    "samples": [
      {
        "input": "3\n*..\n.*.\n*..\n",
        "output": "1\n"
      }
    ]
  },
  "1022": {
    "id": 1022,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1022",
    "source": {
      "sourceString": "2020 February Platinum",
      "year": 2020,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Help Yourself",
      "place": 3,
      "name": "Help Yourself"
    },
    "input": "help.in",
    "output": "help.out",
    "samples": [
      {
        "input": "3 2\n1 6\n2 3\n4 5\n",
        "output": "10\n"
      }
    ]
  },
  "1035": {
    "id": 1035,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1035",
    "source": {
      "sourceString": "2020 US Open Bronze",
      "year": 2020,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Social Distancing I",
      "place": 1,
      "name": "Social Distancing I"
    },
    "input": "socdist1.in",
    "output": "socdist1.out",
    "samples": [
      {
        "input": "14\n10001001000010\n",
        "output": "2\n"
      }
    ]
  },
  "1036": {
    "id": 1036,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1036",
    "source": {
      "sourceString": "2020 US Open Bronze",
      "year": 2020,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Social Distancing II",
      "place": 2,
      "name": "Social Distancing II"
    },
    "input": "socdist2.in",
    "output": "socdist2.out",
    "samples": [
      {
        "input": "6\n7 1\n1 1\n15 1\n3 1\n10 0\n6 1\n",
        "output": "3\n"
      }
    ]
  },
  "1037": {
    "id": 1037,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1037",
    "source": {
      "sourceString": "2020 US Open Bronze",
      "year": 2020,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cowntact Tracing",
      "place": 3,
      "name": "Cowntact Tracing"
    },
    "input": "tracing.in",
    "output": "tracing.out",
    "samples": [
      {
        "input": "4 3\n1100\n7 1 2\n5 2 3\n6 2 4\n",
        "output": "1 1 Infinity\n"
      }
    ]
  },
  "1038": {
    "id": 1038,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1038",
    "source": {
      "sourceString": "2020 US Open Silver",
      "year": 2020,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Social Distancing",
      "place": 1,
      "name": "Social Distancing"
    },
    "input": "socdist.in",
    "output": "socdist.out",
    "samples": [
      {
        "input": "5 3\n0 2\n4 7\n9 9\n",
        "output": "2\n"
      }
    ]
  },
  "1039": {
    "id": 1039,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1039",
    "source": {
      "sourceString": "2020 US Open Silver",
      "year": 2020,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cereal",
      "place": 2,
      "name": "Cereal"
    },
    "input": "cereal.in",
    "output": "cereal.out",
    "samples": [
      {
        "input": "4 2\n1 2\n1 2\n1 2\n1 2\n",
        "output": "2\n2\n2\n1\n"
      }
    ]
  },
  "1040": {
    "id": 1040,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1040",
    "source": {
      "sourceString": "2020 US Open Silver",
      "year": 2020,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The Moo Particle",
      "place": 3,
      "name": "The Moo Particle"
    },
    "input": "moop.in",
    "output": "moop.out",
    "samples": [
      {
        "input": "4\n1 0\n0 1\n-1 0\n0 -1\n",
        "output": "1\n"
      },
      {
        "input": "3\n0 0\n1 1\n-1 3\n",
        "output": "2\n"
      }
    ]
  },
  "1041": {
    "id": 1041,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1041",
    "source": {
      "sourceString": "2020 US Open Gold",
      "year": 2020,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Haircut",
      "place": 1,
      "name": "Haircut"
    },
    "input": "haircut.in",
    "output": "haircut.out",
    "samples": [
      {
        "input": "5\n5 2 3 3 0\n",
        "output": "0\n4\n4\n5\n7\n"
      }
    ]
  },
  "1042": {
    "id": 1042,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1042",
    "source": {
      "sourceString": "2020 US Open Gold",
      "year": 2020,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Favorite Colors",
      "place": 2,
      "name": "Favorite Colors"
    },
    "input": "fcolor.in",
    "output": "fcolor.out",
    "samples": [
      {
        "input": "9 12\n1 2\n4 2\n5 8\n4 6\n6 9\n2 9\n8 7\n8 3\n7 1\n9 4\n3 5\n3 4\n",
        "output": "1\n2\n3\n1\n1\n2\n3\n2\n3\n"
      }
    ]
  },
  "1043": {
    "id": 1043,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1043",
    "source": {
      "sourceString": "2020 US Open Gold",
      "year": 2020,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Exercise",
      "place": 3,
      "name": "Exercise"
    },
    "input": "exercise.in",
    "output": "exercise.out",
    "samples": [
      {
        "input": "5 1000000007\n",
        "output": "21\n"
      }
    ]
  },
  "1044": {
    "id": 1044,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1044",
    "source": {
      "sourceString": "2020 US Open Platinum",
      "year": 2020,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Sprinklers 2: Return of the Alfalfa",
      "place": 1,
      "name": "Sprinklers 2: Return of the Alfalfa"
    },
    "input": "sprinklers2.in",
    "output": "sprinklers2.out",
    "samples": [
      {
        "input": "2\n..\n..\n",
        "output": "28\n"
      },
      {
        "input": "4\n..W.\n..WW\nWW..\n...W\n",
        "output": "2304\n"
      }
    ]
  },
  "1045": {
    "id": 1045,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1045",
    "source": {
      "sourceString": "2020 US Open Platinum",
      "year": 2020,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Exercise",
      "place": 2,
      "name": "Exercise"
    },
    "input": "exercise.in",
    "output": "exercise.out",
    "samples": [
      {
        "input": "5 1000000007\n",
        "output": "369329541\n"
      }
    ]
  },
  "1046": {
    "id": 1046,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1046",
    "source": {
      "sourceString": "2020 US Open Platinum",
      "year": 2020,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Circus",
      "place": 3,
      "name": "Circus"
    },
    "input": "circus.in",
    "output": "circus.out",
    "samples": [
      {
        "input": "5\n1 2\n2 3\n3 4\n3 5\n",
        "output": "1\n1\n3\n24\n120\n"
      },
      {
        "input": "8\n1 3\n2 3\n3 4\n4 5\n5 6\n6 7\n6 8\n",
        "output": "1\n1\n1\n6\n30\n180\n5040\n40320\n"
      }
    ]
  },
  "1059": {
    "id": 1059,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1059",
    "source": {
      "sourceString": "2020 December Bronze",
      "year": 2020,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Do You Know Your ABCs?",
      "place": 1,
      "name": "Do You Know Your ABCs?"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 2 11 4 9 7 9\n",
        "output": "2 2 7\n"
      }
    ]
  },
  "1060": {
    "id": 1060,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1060",
    "source": {
      "sourceString": "2020 December Bronze",
      "year": 2020,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Daisy Chains",
      "place": 2,
      "name": "Daisy Chains"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1 1 2 3\n",
        "output": "6\n"
      }
    ]
  },
  "1061": {
    "id": 1061,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1061",
    "source": {
      "sourceString": "2020 December Bronze",
      "year": 2020,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Stuck in a Rut",
      "place": 3,
      "name": "Stuck in a Rut"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\nE 3 5\nN 5 3\nE 4 6\nE 10 4\nN 11 2\nN 8 1\n",
        "output": "5\n3\nInfinity\nInfinity\n2\n5\n"
      }
    ]
  },
  "1062": {
    "id": 1062,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1062",
    "source": {
      "sourceString": "2020 December Silver",
      "year": 2020,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cowntagion",
      "place": 1,
      "name": "Cowntagion"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1 2\n1 3\n1 4\n",
        "output": "5\n"
      }
    ]
  },
  "1063": {
    "id": 1063,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1063",
    "source": {
      "sourceString": "2020 December Silver",
      "year": 2020,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Rectangular Pasture",
      "place": 2,
      "name": "Rectangular Pasture"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n0 2\n1 0\n2 3\n3 5\n",
        "output": "13\n"
      }
    ]
  },
  "1064": {
    "id": 1064,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1064",
    "source": {
      "sourceString": "2020 December Silver",
      "year": 2020,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Stuck in a Rut",
      "place": 3,
      "name": "Stuck in a Rut"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\nE 3 5\nN 5 3\nE 4 6\nE 10 4\nN 11 1\nE 9 2\n",
        "output": "0\n0\n1\n2\n1\n0\n"
      }
    ]
  },
  "1065": {
    "id": 1065,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1065",
    "source": {
      "sourceString": "2020 December Gold",
      "year": 2020,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Replication",
      "place": 1,
      "name": "Replication"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "10 1\n##########\n#........#\n#S.......#\n#........#\n##########\n#S....S..#\n##########\n##########\n##########\n##########\n",
        "output": "15\n"
      },
      {
        "input": "10 2\n##########\n#.#......#\n#.#......#\n#S.......#\n#.#......#\n#.#......#\n##########\n##########\n##########\n##########\n",
        "output": "28\n"
      },
      {
        "input": "10 2\n##########\n#.S#.....#\n#..#.....#\n#S.......#\n#..#.....#\n#..#.....#\n##########\n##########\n##########\n##########\n",
        "output": "10\n"
      }
    ]
  },
  "1066": {
    "id": 1066,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1066",
    "source": {
      "sourceString": "2020 December Gold",
      "year": 2020,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Bovine Genetics",
      "place": 2,
      "name": "Bovine Genetics"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "?\n",
        "output": "4\n"
      },
      {
        "input": "GAT?GTT\n",
        "output": "3\n"
      }
    ]
  },
  "1067": {
    "id": 1067,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1067",
    "source": {
      "sourceString": "2020 December Gold",
      "year": 2020,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Square Pasture",
      "place": 3,
      "name": "Square Pasture"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n0 2\n2 3\n3 1\n1 0\n",
        "output": "14\n"
      },
      {
        "input": "16\n17 4\n16 13\n0 15\n1 19\n7 11\n3 17\n6 16\n18 9\n15 6\n11 7\n10 8\n2 1\n12 0\n5 18\n14 5\n13 2\n",
        "output": "420\n"
      }
    ]
  },
  "1068": {
    "id": 1068,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1068",
    "source": {
      "sourceString": "2020 December Platinum",
      "year": 2020,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Sleeping Cows",
      "place": 1,
      "name": "Sleeping Cows"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1 2 3 4\n1 2 2 3\n",
        "output": "9\n"
      }
    ]
  },
  "1069": {
    "id": 1069,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1069",
    "source": {
      "sourceString": "2020 December Platinum",
      "year": 2020,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Spaceship",
      "place": 2,
      "name": "Spaceship"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6 3 8\n010000\n001000\n000100\n000010\n000000\n000001\n1 1 1 1\n3 3 1 1\n1 1 3 3\n1 1 1 5\n2 1 1 5\n1 1 2 5\n3 1 3 5\n2 6 2 6\n",
        "output": "1\n0\n1\n3\n2\n2\n0\n5\n"
      },
      {
        "input": "6 4 6\n001100\n001110\n101101\n010111\n110111\n000111\n3 2 4 3\n3 1 4 4\n3 4 4 1\n3 3 4 3\n3 6 4 3\n3 1 4 2\n",
        "output": "26\n49\n29\n27\n18\n22\n"
      },
      {
        "input": "6 10 5\n110101\n011001\n001111\n101111\n111010\n000001\n2 5 2 5\n6 1 5 2\n3 4 8 3\n9 3 3 5\n5 1 3 4\n",
        "output": "713313311\n716721076\n782223918\n335511486\n539247783\n"
      }
    ]
  },
  "1070": {
    "id": 1070,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1070",
    "source": {
      "sourceString": "2020 December Platinum",
      "year": 2020,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cowmistry",
      "place": 3,
      "name": "Cowmistry"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1 13\n0 199\n",
        "output": "4280\n"
      },
      {
        "input": "6 147\n1 35\n48 103\n125 127\n154 190\n195 235\n240 250\n",
        "output": "267188\n"
      }
    ]
  },
  "1083": {
    "id": 1083,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1083",
    "source": {
      "sourceString": "2021 January Bronze",
      "year": 2021,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Uddered but not Herd",
      "place": 1,
      "name": "Uddered but not Herd"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "abcdefghijklmnopqrstuvwxyz\nmood\n",
        "output": "3\n"
      }
    ]
  },
  "1084": {
    "id": 1084,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1084",
    "source": {
      "sourceString": "2021 January Bronze",
      "year": 2021,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Even More Odd Photos",
      "place": 2,
      "name": "Even More Odd Photos"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7\n1 3 5 7 9 11 13\n",
        "output": "3\n"
      },
      {
        "input": "7\n11 2 17 13 1 15 3\n",
        "output": "5\n"
      }
    ]
  },
  "1085": {
    "id": 1085,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1085",
    "source": {
      "sourceString": "2021 January Bronze",
      "year": 2021,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Just Stalling",
      "place": 3,
      "name": "Just Stalling"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1 2 3 4\n2 4 3 4\n",
        "output": "8\n"
      }
    ]
  },
  "1086": {
    "id": 1086,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1086",
    "source": {
      "sourceString": "2021 January Silver",
      "year": 2021,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Dance Mooves",
      "place": 1,
      "name": "Dance Mooves"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 4\n1 3\n1 2\n2 3\n2 4\n",
        "output": "4\n4\n3\n4\n1\n"
      }
    ]
  },
  "1087": {
    "id": 1087,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1087",
    "source": {
      "sourceString": "2021 January Silver",
      "year": 2021,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. No Time to Paint",
      "place": 2,
      "name": "No Time to Paint"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "8 2\nABBAABCB\n3 6\n1 4\n",
        "output": "4\n3\n"
      }
    ]
  },
  "1088": {
    "id": 1088,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1088",
    "source": {
      "sourceString": "2021 January Silver",
      "year": 2021,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Spaced Out",
      "place": 3,
      "name": "Spaced Out"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n3 3 1 1\n1 1 3 1\n3 3 1 1\n1 1 3 3\n",
        "output": "22\n"
      }
    ]
  },
  "1089": {
    "id": 1089,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1089",
    "source": {
      "sourceString": "2021 January Gold",
      "year": 2021,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Uddered but not Herd",
      "place": 1,
      "name": "Uddered but not Herd"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "mildredree\n",
        "output": "3\n"
      }
    ]
  },
  "1090": {
    "id": 1090,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1090",
    "source": {
      "sourceString": "2021 January Gold",
      "year": 2021,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Telephone",
      "place": 2,
      "name": "Telephone"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 4\n1 4 2 3 4\n1010\n0001\n0110\n0100\n",
        "output": "6\n"
      }
    ]
  },
  "1091": {
    "id": 1091,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1091",
    "source": {
      "sourceString": "2021 January Gold",
      "year": 2021,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Dance Mooves",
      "place": 3,
      "name": "Dance Mooves"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6 4 7\n1 2\n2 3\n3 4\n4 5\n",
        "output": "5\n4\n3\n3\n3\n1\n"
      }
    ]
  },
  "1092": {
    "id": 1092,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1092",
    "source": {
      "sourceString": "2021 January Platinum",
      "year": 2021,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Sum of Distances",
      "place": 1,
      "name": "Sum of Distances"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n\n2 1\n1 2\n\n4 4\n1 2\n2 3\n3 4\n4 1\n",
        "output": "4\n"
      },
      {
        "input": "3\n\n4 4\n1 2\n2 3\n3 1\n3 4\n\n6 5\n1 2\n2 3\n3 4\n4 5\n5 6\n\n7 7\n1 2\n2 3\n3 4\n4 5\n5 6\n6 7\n7 1\n",
        "output": "706\n"
      }
    ]
  },
  "1093": {
    "id": 1093,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1093",
    "source": {
      "sourceString": "2021 January Platinum",
      "year": 2021,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Minimum Cost Paths",
      "place": 2,
      "name": "Minimum Cost Paths"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 4\n1 100 100 20\n20\n1 1\n2 1\n3 1\n4 1\n5 1\n1 2\n2 2\n3 2\n4 2\n5 2\n1 3\n2 3\n3 3\n4 3\n5 3\n1 4\n2 4\n3 4\n4 4\n5 4\n",
        "output": "0\n1\n2\n3\n4\n1\n5\n11\n19\n29\n2\n9\n20\n35\n54\n3\n13\n29\n49\n69\n"
      }
    ]
  },
  "1094": {
    "id": 1094,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1094",
    "source": {
      "sourceString": "2021 January Platinum",
      "year": 2021,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Paint by Letters",
      "place": 3,
      "name": "Paint by Letters"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 8 9\nABBAAAAA\nABAAAABA\nCAADABBA\nAAAAAAAA\n1 1 4 8\n3 5 3 8\n1 3 2 4\n1 4 2 5\n1 1 3 3\n4 4 4 4\n2 6 4 8\n3 5 4 6\n1 6 3 8\n",
        "output": "6\n3\n2\n1\n4\n1\n3\n2\n2\n"
      }
    ]
  },
  "1107": {
    "id": 1107,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1107",
    "source": {
      "sourceString": "2021 February Bronze",
      "year": 2021,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Year of the Cow",
      "place": 1,
      "name": "Year of the Cow"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\nMildred born in previous Dragon year from Bessie\nGretta born in previous Monkey year from Mildred\nElsie born in next Ox year from Gretta\nPaulina born in next Dog year from Bessie\n",
        "output": "12\n"
      }
    ]
  },
  "1108": {
    "id": 1108,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1108",
    "source": {
      "sourceString": "2021 February Bronze",
      "year": 2021,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Comfortable Cows",
      "place": 2,
      "name": "Comfortable Cows"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "8\n0 1\n1 0\n1 1\n1 2\n2 1\n2 2\n3 1\n3 2\n",
        "output": "0\n0\n0\n1\n0\n0\n1\n2\n"
      }
    ]
  },
  "1109": {
    "id": 1109,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1109",
    "source": {
      "sourceString": "2021 February Bronze",
      "year": 2021,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Clockwise Fence",
      "place": 3,
      "name": "Clockwise Fence"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\nNESW\nWSSSEENWNEESSENNNNWWWS\n",
        "output": "CW\nCCW\n"
      }
    ]
  },
  "1110": {
    "id": 1110,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1110",
    "source": {
      "sourceString": "2021 February Silver",
      "year": 2021,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Comfortable Cows",
      "place": 1,
      "name": "Comfortable Cows"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "9\n0 1\n1 0\n1 1\n1 2\n2 1\n2 2\n3 1\n3 2\n4 1\n",
        "output": "0\n0\n0\n1\n0\n0\n1\n2\n4\n"
      }
    ]
  },
  "1111": {
    "id": 1111,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1111",
    "source": {
      "sourceString": "2021 February Silver",
      "year": 2021,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Year of the Cow",
      "place": 2,
      "name": "Year of the Cow"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 3\n101\n85\n100\n46\n95\n",
        "output": "36\n"
      }
    ]
  },
  "1112": {
    "id": 1112,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1112",
    "source": {
      "sourceString": "2021 February Silver",
      "year": 2021,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Just Green Enough",
      "place": 3,
      "name": "Just Green Enough"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n57 120 87\n200 100 150\n2 141 135\n",
        "output": "8\n"
      }
    ]
  },
  "1113": {
    "id": 1113,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1113",
    "source": {
      "sourceString": "2021 February Gold",
      "year": 2021,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Stone Game",
      "place": 1,
      "name": "Stone Game"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1\n7\n",
        "output": "4\n"
      },
      {
        "input": "6\n3 2 3 2 3 1\n",
        "output": "8\n"
      }
    ]
  },
  "1114": {
    "id": 1114,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1114",
    "source": {
      "sourceString": "2021 February Gold",
      "year": 2021,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Modern Art 3",
      "place": 2,
      "name": "Modern Art 3"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "10\n1 2 3 4 1 4 3 2 1 6\n",
        "output": "6\n"
      }
    ]
  },
  "1115": {
    "id": 1115,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1115",
    "source": {
      "sourceString": "2021 February Gold",
      "year": 2021,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Count the Cows",
      "place": 3,
      "name": "Count the Cows"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "8\n10 0 0\n10 0 1\n9 0 2\n8 0 2\n0 1 7\n1 1 7\n2 1 7\n1000000000000000000 1000000000000000000 1000000000000000000\n",
        "output": "11\n0\n4\n3\n1\n2\n2\n1000000000000000001\n"
      }
    ]
  },
  "1116": {
    "id": 1116,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1116",
    "source": {
      "sourceString": "2021 February Platinum",
      "year": 2021,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. No Time to Dry",
      "place": 1,
      "name": "No Time to Dry"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "8 4\n1 2 2 1 1 2 3 2\n4 6\n3 6\n1 6\n5 8\n",
        "output": "2\n3\n3\n3\n"
      }
    ]
  },
  "1117": {
    "id": 1117,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1117",
    "source": {
      "sourceString": "2021 February Platinum",
      "year": 2021,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Minimizing Edges",
      "place": 2,
      "name": "Minimizing Edges"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n\n5 5\n1 2\n2 3\n2 5\n1 4\n4 5\n\n5 5\n1 2\n2 3\n3 4\n4 5\n1 5\n",
        "output": "4\n5\n"
      },
      {
        "input": "7\n\n8 10\n1 2\n1 3\n1 4\n1 5\n2 6\n3 7\n4 8\n5 8\n6 7\n8 8\n\n10 11\n1 2\n1 5\n1 6\n2 3\n3 4\n4 5\n4 10\n6 7\n7 8\n8 9\n9 9\n\n13 15\n1 2\n1 5\n1 6\n2 3\n3 4\n4 5\n6 7\n7 8\n7 11\n8 9\n9 10\n10 11\n11 12\n11 13\n12 13\n\n16 18\n1 2\n1 7\n1 8\n2 3\n3 4\n4 5\n5 6\n6 7\n8 9\n9 10\n9 15\n9 16\n10 11\n11 12\n12 13\n13 14\n14 15\n14 16\n\n21 22\n1 2\n1 9\n1 12\n2 3\n3 4\n4 5\n5 6\n6 7\n7 8\n7 11\n8 9\n8 10\n12 13\n13 14\n13 21\n14 15\n15 16\n16 17\n17 18\n18 19\n19 20\n20 21\n\n20 26\n1 2\n1 5\n1 6\n2 3\n3 4\n4 5\n4 7\n6 8\n8 9\n8 11\n8 12\n8 13\n8 14\n8 15\n8 16\n8 17\n9 10\n10 18\n11 18\n12 19\n13 20\n14 20\n15 20\n16 20\n17 20\n19 20\n\n24 31\n1 2\n1 7\n1 8\n2 3\n3 4\n4 5\n5 6\n6 7\n6 9\n8 10\n10 11\n10 16\n10 17\n10 18\n10 19\n10 20\n11 12\n12 13\n13 14\n14 15\n15 16\n15 17\n15 18\n15 19\n15 20\n15 21\n15 22\n15 23\n15 24\n21 22\n23 24\n",
        "output": "10\n11\n15\n18\n22\n26\n31\n"
      }
    ]
  },
  "1118": {
    "id": 1118,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1118",
    "source": {
      "sourceString": "2021 February Platinum",
      "year": 2021,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Counting Graphs",
      "place": 3,
      "name": "Counting Graphs"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1\n\n5 4\n1 2\n2 3\n1 4\n3 5\n",
        "output": "3\n"
      },
      {
        "input": "7\n\n4 6\n1 2\n2 3\n3 4\n1 3\n2 4\n1 4\n\n5 5\n1 2\n2 3\n3 4\n4 5\n1 5\n\n5 7\n1 2\n1 3\n1 5\n2 4\n3 3\n3 4\n4 5\n\n6 6\n1 2\n2 3\n3 4\n4 5\n5 6\n6 6\n\n6 7\n1 2\n2 3\n1 3\n1 4\n4 5\n5 6\n1 6\n\n10 10\n1 1\n1 2\n1 3\n1 4\n1 5\n1 6\n1 7\n1 8\n1 9\n1 10\n\n22 28\n1 2\n2 3\n3 4\n4 5\n5 6\n6 7\n1 7\n1 8\n3 9\n8 10\n10 11\n10 12\n10 13\n10 14\n11 15\n12 16\n13 17\n14 18\n9 15\n9 16\n9 17\n9 18\n15 19\n19 20\n15 20\n16 21\n21 22\n16 22\n",
        "output": "45\n35\n11\n1\n15\n371842544\n256838540\n"
      }
    ]
  },
  "1131": {
    "id": 1131,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1131",
    "source": {
      "sourceString": "2021 US Open Bronze",
      "year": 2021,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Acowdemia I",
      "place": 1,
      "name": "Acowdemia I"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 0\n1 100 2 3\n",
        "output": "2\n"
      },
      {
        "input": "4 1\n1 100 2 3\n",
        "output": "3\n"
      }
    ]
  },
  "1132": {
    "id": 1132,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1132",
    "source": {
      "sourceString": "2021 US Open Bronze",
      "year": 2021,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Acowdemia II",
      "place": 2,
      "name": "Acowdemia II"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1 3\ndean elsie mildred\nelsie mildred dean\n",
        "output": "B11\n0B?\n0?B\n"
      },
      {
        "input": "2 3\nelsie mildred dean\nelsie mildred dean\nelsie dean mildred\n",
        "output": "B00\n1B0\n11B\n"
      }
    ]
  },
  "1133": {
    "id": 1133,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1133",
    "source": {
      "sourceString": "2021 US Open Bronze",
      "year": 2021,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Acowdemia III",
      "place": 3,
      "name": "Acowdemia III"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 5\n.CGGC\n.CGCG\nCGCG.\n.CC.C\n",
        "output": "4\n"
      }
    ]
  },
  "1134": {
    "id": 1134,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1134",
    "source": {
      "sourceString": "2021 US Open Silver",
      "year": 2021,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Maze Tac Toe",
      "place": 1,
      "name": "Maze Tac Toe"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7\n#####################\n###O11###...###M13###\n###......O22......###\n###...######M22######\n###BBB###M31###M11###\n###...O32...M33O31###\n#####################\n",
        "output": "8\n"
      }
    ]
  },
  "1135": {
    "id": 1135,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1135",
    "source": {
      "sourceString": "2021 US Open Silver",
      "year": 2021,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Do You Know Your ABCs?",
      "place": 2,
      "name": "Do You Know Your ABCs?"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "10\n7\n1 2 3 4 5 6 7\n4\n4 5 7 8\n4\n4 5 7 9\n4\n4 5 7 10\n4\n4 5 7 11\n4\n4 5 7 12\n4\n4 5 7 13\n4\n4 5 7 14\n4\n4 5 7 15\n4\n4 5 7 16\n",
        "output": "1\n3\n5\n1\n4\n3\n0\n0\n0\n1\n"
      }
    ]
  },
  "1136": {
    "id": 1136,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1136",
    "source": {
      "sourceString": "2021 US Open Silver",
      "year": 2021,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Acowdemia",
      "place": 3,
      "name": "Acowdemia"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 4 1\n1 100 1 1\n",
        "output": "3\n"
      },
      {
        "input": "4 1 4\n1 100 1 1\n",
        "output": "2\n"
      }
    ]
  },
  "1137": {
    "id": 1137,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1137",
    "source": {
      "sourceString": "2021 US Open Gold",
      "year": 2021,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. United Cows of Farmer John",
      "place": 1,
      "name": "United Cows of Farmer John"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7\n1 2 3 4 3 2 5\n",
        "output": "13\n"
      }
    ]
  },
  "1138": {
    "id": 1138,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1138",
    "source": {
      "sourceString": "2021 US Open Gold",
      "year": 2021,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Portals",
      "place": 2,
      "name": "Portals"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n10 1 4 8 9\n11 1 2 5 6\n12 9 10 2 3\n3 4 3 6 7\n15 10 8 7 5\n",
        "output": "13\n"
      }
    ]
  },
  "1139": {
    "id": 1139,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1139",
    "source": {
      "sourceString": "2021 US Open Gold",
      "year": 2021,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Permutation",
      "place": 3,
      "name": "Permutation"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n0 0\n0 4\n1 1\n1 2\n",
        "output": "0\n"
      },
      {
        "input": "4\n0 0\n0 4\n4 0\n1 1\n",
        "output": "24\n"
      },
      {
        "input": "5\n0 0\n0 4\n4 0\n1 1\n1 2\n",
        "output": "96\n"
      }
    ]
  },
  "1140": {
    "id": 1140,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1140",
    "source": {
      "sourceString": "2021 US Open Platinum",
      "year": 2021,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. United Cows of Farmer John",
      "place": 1,
      "name": "United Cows of Farmer John"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7\n1 2 3 4 3 2 5\n",
        "output": "9\n"
      }
    ]
  },
  "1141": {
    "id": 1141,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1141",
    "source": {
      "sourceString": "2021 US Open Platinum",
      "year": 2021,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Routing Schemes",
      "place": 2,
      "name": "Routing Schemes"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n\n8 0\nSS....RR\n00100000\n00100000\n00011000\n00000100\n00000100\n00000011\n00000000\n00000000\n\n13 0\nSSS.RRRSS.RR.\n0001000000000\n0001000000000\n0001000000000\n0000111000000\n0000000000000\n0000000000000\n0000000000000\n0000000001000\n0000000001000\n0000000000110\n0000000000000\n0000000000000\n0000000000000\n",
        "output": "4\n12\n"
      },
      {
        "input": "2\n\n5 1\nSS.RR\n00101\n00100\n10010\n00000\n00000\n\n6 2\nS....R\n001000\n000100\n010001\n000010\n001000\n000000\n",
        "output": "3\n1\n"
      },
      {
        "input": "5\n\n3 2\nRS.\n010\n101\n100\n\n4 2\n.R.S\n0100\n0010\n1000\n0100\n\n4 2\n.SR.\n0000\n0011\n0100\n0010\n\n5 2\n.SSRR\n01000\n10101\n01010\n00000\n00000\n\n6 2\nSS..RR\n001010\n000010\n000010\n000010\n100101\n000000\n",
        "output": "2\n1\n2\n6\n24\n"
      }
    ]
  },
  "1142": {
    "id": 1142,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1142",
    "source": {
      "sourceString": "2021 US Open Platinum",
      "year": 2021,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Balanced Subsets",
      "place": 3,
      "name": "Balanced Subsets"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\nGG\nGG\n",
        "output": "13\n"
      },
      {
        "input": "4\nGGGG\nGGGG\nGG.G\nGGGG\n",
        "output": "642\n"
      }
    ]
  },
  "1155": {
    "id": 1155,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1155",
    "source": {
      "sourceString": "2021 December Bronze",
      "year": 2021,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Lonely Photo",
      "place": 1,
      "name": "Lonely Photo"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\nGHGHG\n",
        "output": "3\n"
      }
    ]
  },
  "1156": {
    "id": 1156,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1156",
    "source": {
      "sourceString": "2021 December Bronze",
      "year": 2021,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Air Cownditioning",
      "place": 2,
      "name": "Air Cownditioning"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n1 5 3 3 4\n1 2 2 2 1\n",
        "output": "5\n"
      }
    ]
  },
  "1157": {
    "id": 1157,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1157",
    "source": {
      "sourceString": "2021 December Bronze",
      "year": 2021,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Walking Home",
      "place": 3,
      "name": "Walking Home"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7\n3 1\n...\n...\n...\n3 2\n...\n...\n...\n3 3\n...\n...\n...\n3 3\n...\n.H.\n...\n3 2\n.HH\nHHH\nHH.\n3 3\n.H.\nH..\n...\n4 3\n...H\n.H..\n....\nH...\n",
        "output": "2\n4\n6\n2\n0\n0\n6\n"
      }
    ]
  },
  "1158": {
    "id": 1158,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1158",
    "source": {
      "sourceString": "2021 December Silver",
      "year": 2021,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Closest Cow Wins",
      "place": 1,
      "name": "Closest Cow Wins"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6 5 2\n0 4\n4 6\n8 10\n10 8\n12 12\n13 14\n2\n3\n5\n7\n11\n",
        "output": "36\n"
      }
    ]
  },
  "1159": {
    "id": 1159,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1159",
    "source": {
      "sourceString": "2021 December Silver",
      "year": 2021,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Connecting Two Barns",
      "place": 2,
      "name": "Connecting Two Barns"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n5 2\n1 2\n4 5\n5 3\n1 2\n2 3\n4 5\n",
        "output": "2\n1\n"
      }
    ]
  },
  "1160": {
    "id": 1160,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1160",
    "source": {
      "sourceString": "2021 December Silver",
      "year": 2021,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Convoluted Intervals",
      "place": 3,
      "name": "Convoluted Intervals"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 5\n1 3\n2 5\n",
        "output": "0\n0\n1\n3\n4\n4\n4\n3\n3\n1\n1\n"
      }
    ]
  },
  "1161": {
    "id": 1161,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1161",
    "source": {
      "sourceString": "2021 December Gold",
      "year": 2021,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Paired Up",
      "place": 1,
      "name": "Paired Up"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 5 2\n1 2\n3 2\n4 2\n5 1\n7 2\n",
        "output": "6\n"
      },
      {
        "input": "1 5 2\n1 2\n3 2\n4 2\n5 1\n7 2\n",
        "output": "2\n"
      },
      {
        "input": "2 15 7\n3 693\n10 196\n12 182\n14 22\n15 587\n31 773\n38 458\n39 58\n40 583\n41 992\n84 565\n86 897\n92 197\n96 146\n99 785\n",
        "output": "2470\n"
      }
    ]
  },
  "1162": {
    "id": 1162,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1162",
    "source": {
      "sourceString": "2021 December Gold",
      "year": 2021,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. HILO",
      "place": 2,
      "name": "HILO"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n5 1 2 4 3\n",
        "output": "0\n1\n1\n2\n1\n0\n"
      }
    ]
  },
  "1163": {
    "id": 1163,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1163",
    "source": {
      "sourceString": "2021 December Gold",
      "year": 2021,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Bracelet Crossings",
      "place": 3,
      "name": "Bracelet Crossings"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n\n1 2\n2 1 1\n2 1 1\n\n1 3\n2 1 1\n0\n2 1 1\n\n2 1\n4 1 2 1 2\n\n4 2\n6 1 2 2 3 3 1\n6 1 2 4 4 2 1\n\n2 2\n4 1 1 2 2\n4 2 2 1 1\n",
        "output": "YES\nNO\nNO\nYES\nNO\n"
      }
    ]
  },
  "1164": {
    "id": 1164,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1164",
    "source": {
      "sourceString": "2021 December Platinum",
      "year": 2021,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Tickets",
      "place": 1,
      "name": "Tickets"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7 6\n4 1 2 3\n4 10 5 6\n2 100 7 7\n6 1000 1 1\n5 10000 1 4\n6 100000 5 6\n",
        "output": "-1\n-1\n-1\n1111\n10100\n110100\n-1\n"
      }
    ]
  },
  "1165": {
    "id": 1165,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1165",
    "source": {
      "sourceString": "2021 December Platinum",
      "year": 2021,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Paired Up",
      "place": 2,
      "name": "Paired Up"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 5 4\nG 1 1\nH 3 4\nG 4 2\nH 6 6\nH 8 9\n",
        "output": "16\n"
      },
      {
        "input": "1 5 4\nG 1 1\nH 3 4\nG 4 2\nH 6 6\nH 8 9\n",
        "output": "6\n"
      },
      {
        "input": "2 10 76\nH 1 18\nH 18 465\nH 25 278\nH 30 291\nH 36 202\nG 45 96\nG 60 375\nG 93 941\nG 96 870\nG 98 540\n",
        "output": "1893\n"
      }
    ]
  },
  "1166": {
    "id": 1166,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1166",
    "source": {
      "sourceString": "2021 December Platinum",
      "year": 2021,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. HILO",
      "place": 3,
      "name": "HILO"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 2\n",
        "output": "17\n"
      },
      {
        "input": "60 10\n",
        "output": "508859913\n"
      }
    ]
  },
  "1179": {
    "id": 1179,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1179",
    "source": {
      "sourceString": "2022 January Bronze",
      "year": 2022,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Herdle",
      "place": 1,
      "name": "Herdle"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "COW\nSAY\nMOO\nWIN\nTHE\nIOI\n",
        "output": "1\n1\n"
      },
      {
        "input": "AAA\nBBB\nCCC\nAYY\nAAA\nZZZ\n",
        "output": "1\n2\n"
      }
    ]
  },
  "1180": {
    "id": 1180,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1180",
    "source": {
      "sourceString": "2022 January Bronze",
      "year": 2022,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Non-Transitive Dice",
      "place": 2,
      "name": "Non-Transitive Dice"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n4 5 6 7 2 4 5 10\n2 2 2 2 1 1 1 1\n1 1 1 1 2 2 2 2\n",
        "output": "yes\nno\nno\n"
      }
    ]
  },
  "1181": {
    "id": 1181,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1181",
    "source": {
      "sourceString": "2022 January Bronze",
      "year": 2022,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Drought",
      "place": 3,
      "name": "Drought"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n3\n8 10 5\n6\n4 6 4 4 6 4\n3\n0 1 0\n2\n1 2\n3\n10 9 9\n",
        "output": "14\n16\n-1\n-1\n-1\n"
      }
    ]
  },
  "1182": {
    "id": 1182,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1182",
    "source": {
      "sourceString": "2022 January Silver",
      "year": 2022,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Searching for Soulmates",
      "place": 1,
      "name": "Searching for Soulmates"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n31 13\n12 8\n25 6\n10 24\n1 1\n997 120\n",
        "output": "8\n3\n8\n3\n0\n20\n"
      }
    ]
  },
  "1183": {
    "id": 1183,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1183",
    "source": {
      "sourceString": "2022 January Silver",
      "year": 2022,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Frisbee",
      "place": 2,
      "name": "Cow Frisbee"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7\n4 3 1 2 5 6 7\n",
        "output": "24\n"
      }
    ]
  },
  "1184": {
    "id": 1184,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1184",
    "source": {
      "sourceString": "2022 January Silver",
      "year": 2022,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cereal 2",
      "place": 3,
      "name": "Cereal 2"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "8 10\n2 1\n3 4\n2 3\n6 5\n7 8\n6 7\n7 5\n5 8\n",
        "output": "1\n1\n3\n2\n8\n4\n6\n5\n7\n"
      }
    ]
  },
  "1185": {
    "id": 1185,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1185",
    "source": {
      "sourceString": "2022 January Gold",
      "year": 2022,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Drought",
      "place": 1,
      "name": "Drought"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n9 11 7\n",
        "output": "241\n"
      },
      {
        "input": "4\n6 8 5 9\n",
        "output": "137\n"
      }
    ]
  },
  "1186": {
    "id": 1186,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1186",
    "source": {
      "sourceString": "2022 January Gold",
      "year": 2022,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Farm Updates",
      "place": 2,
      "name": "Farm Updates"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 9\nA 1 2\nA 2 3\nD 1\nD 3\nA 2 4\nD 2\nR 2\nR 1\nR 3\n",
        "output": "7\n8\n6\n9\n9\n"
      }
    ]
  },
  "1187": {
    "id": 1187,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1187",
    "source": {
      "sourceString": "2022 January Gold",
      "year": 2022,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Tests for Haybales",
      "place": 3,
      "name": "Tests for Haybales"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n2 2 4 5 6 6\n",
        "output": "6\n1\n6\n17\n22\n27\n32\n"
      }
    ]
  },
  "1188": {
    "id": 1188,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1188",
    "source": {
      "sourceString": "2022 January Platinum",
      "year": 2022,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Minimizing Haybales",
      "place": 1,
      "name": "Minimizing Haybales"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 3\n7\n7\n3\n6\n2\n",
        "output": "6\n7\n7\n2\n3\n"
      }
    ]
  },
  "1189": {
    "id": 1189,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1189",
    "source": {
      "sourceString": "2022 January Platinum",
      "year": 2022,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Counting Haybales",
      "place": 2,
      "name": "Counting Haybales"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7\n4\n2 2 2 3\n4\n3 3 1 2\n4\n5 3 4 2\n6\n3 3 1 1 2 2\n6\n1 3 3 4 1 2\n6\n4 1 2 3 5 4\n10\n1 5 6 6 6 4 2 3 2 5\n",
        "output": "4\n4\n5\n15\n9\n8\n19\n"
      }
    ]
  },
  "1190": {
    "id": 1190,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1190",
    "source": {
      "sourceString": "2022 January Platinum",
      "year": 2022,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Multiple Choice Test",
      "place": 3,
      "name": "Multiple Choice Test"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n\n2\n-2 0\n1 0\n\n2\n0 -2\n0 1\n\n3\n-5 -5\n5 1\n10 10\n",
        "output": "242\n"
      }
    ]
  },
  "1203": {
    "id": 1203,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1203",
    "source": {
      "sourceString": "2022 February Bronze",
      "year": 2022,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Sleeping in Class",
      "place": 1,
      "name": "Sleeping in Class"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n6\n1 2 3 1 1 1\n3\n2 2 3\n5\n0 0 0 0 0\n",
        "output": "3\n2\n0\n"
      }
    ]
  },
  "1204": {
    "id": 1204,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1204",
    "source": {
      "sourceString": "2022 February Bronze",
      "year": 2022,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Photoshoot 2",
      "place": 2,
      "name": "Photoshoot 2"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n1 2 3 4 5\n1 2 3 4 5\n",
        "output": "0\n"
      },
      {
        "input": "5\n5 1 3 2 4\n4 5 2 1 3\n",
        "output": "2\n"
      }
    ]
  },
  "1205": {
    "id": 1205,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1205",
    "source": {
      "sourceString": "2022 February Bronze",
      "year": 2022,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Blocks",
      "place": 3,
      "name": "Blocks"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\nMOOOOO\nOOOOOO\nABCDEF\nUVWXYZ\nCOW\nMOO\nZOO\nMOVE\nCODE\nFARM\n",
        "output": "YES\nNO\nYES\nYES\nNO\nNO\n"
      }
    ]
  },
  "1206": {
    "id": 1206,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1206",
    "source": {
      "sourceString": "2022 February Silver",
      "year": 2022,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Redistributing Gifts",
      "place": 1,
      "name": "Redistributing Gifts"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1 2 3 4\n1 3 2 4\n1 2 3 4\n1 2 3 4\n",
        "output": "1\n3\n2\n4\n"
      }
    ]
  },
  "1207": {
    "id": 1207,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1207",
    "source": {
      "sourceString": "2022 February Silver",
      "year": 2022,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Robot Instructions",
      "place": 2,
      "name": "Robot Instructions"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7\n5 10\n-2 0\n3 0\n4 0\n5 0\n0 10\n0 -10\n0 10\n",
        "output": "0\n2\n0\n3\n0\n1\n0\n"
      }
    ]
  },
  "1208": {
    "id": 1208,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1208",
    "source": {
      "sourceString": "2022 February Silver",
      "year": 2022,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Email Filing",
      "place": 3,
      "name": "Email Filing"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n5 5 1\n1 2 3 4 5\n5 5 1\n1 2 3 5 4\n5 5 1\n1 2 4 5 3\n5 5 2\n1 2 4 5 3\n3 10 2\n1 3 2 1 3 2 1 3 2 1\n3 10 1\n1 3 2 1 3 2 1 3 2 1\n",
        "output": "YES\nYES\nNO\nYES\nYES\nNO\n"
      }
    ]
  },
  "1209": {
    "id": 1209,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1209",
    "source": {
      "sourceString": "2022 February Gold",
      "year": 2022,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Redistributing Gifts",
      "place": 1,
      "name": "Redistributing Gifts"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1 2 3 4\n1 3 2 4\n1 2 3 4\n1 2 3 4\n5\nHHHH\nHHGG\nGHGH\nHGGG\nGHHG\n",
        "output": "2\n1\n1\n2\n2\n"
      }
    ]
  },
  "1210": {
    "id": 1210,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1210",
    "source": {
      "sourceString": "2022 February Gold",
      "year": 2022,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow Camp",
      "place": 2,
      "name": "Cow Camp"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 3\n",
        "output": "1.875\n"
      },
      {
        "input": "4 2\n",
        "output": "2.8750000000000000000\n"
      }
    ]
  },
  "1211": {
    "id": 1211,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1211",
    "source": {
      "sourceString": "2022 February Gold",
      "year": 2022,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Moo Network",
      "place": 3,
      "name": "Moo Network"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "10\n83 10\n77 2\n93 4\n86 6\n49 1\n62 7\n90 3\n63 4\n40 10\n72 0\n",
        "output": "660\n"
      }
    ]
  },
  "1212": {
    "id": 1212,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1212",
    "source": {
      "sourceString": "2022 February Platinum",
      "year": 2022,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Paint by Rectangles",
      "place": 1,
      "name": "Paint by Rectangles"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 1\n1 1 3 3\n2 2 4 4\n",
        "output": "4\n"
      },
      {
        "input": "5 2\n1 5 3 6\n5 4 7 9\n4 1 8 3\n9 8 10 10\n2 2 6 7\n",
        "output": "4 5\n"
      }
    ]
  },
  "1213": {
    "id": 1213,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1213",
    "source": {
      "sourceString": "2022 February Platinum",
      "year": 2022,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Sleeping in Class",
      "place": 2,
      "name": "Sleeping in Class"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n1 2 3 1 1 4\n7\n1\n2\n3\n4\n5\n6\n12\n",
        "output": "6\n6\n4\n5\n-1\n4\n5\n"
      }
    ]
  },
  "1214": {
    "id": 1214,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1214",
    "source": {
      "sourceString": "2022 February Platinum",
      "year": 2022,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Phone Numbers",
      "place": 3,
      "name": "Phone Numbers"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n1478\n4455\n5968\n31313211\n123659874\n",
        "output": "5\n2\n24\n3\n255\n"
      }
    ]
  },
  "1227": {
    "id": 1227,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1227",
    "source": {
      "sourceString": "2022 US Open Bronze",
      "year": 2022,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Photoshoot",
      "place": 1,
      "name": "Photoshoot"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "14\nGGGHGHHGHHHGHG\n",
        "output": "1\n"
      }
    ]
  },
  "1228": {
    "id": 1228,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1228",
    "source": {
      "sourceString": "2022 US Open Bronze",
      "year": 2022,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Counting Liars",
      "place": 2,
      "name": "Counting Liars"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\nG 3\nL 5\n",
        "output": "0\n"
      },
      {
        "input": "2\nG 3\nL 2\n",
        "output": "1\n"
      }
    ]
  },
  "1229": {
    "id": 1229,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1229",
    "source": {
      "sourceString": "2022 US Open Bronze",
      "year": 2022,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Alchemy",
      "place": 3,
      "name": "Alchemy"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n2 0 0 1 0\n3\n5 2 3 4\n2 1 1\n3 1 2\n",
        "output": "1\n"
      }
    ]
  },
  "1230": {
    "id": 1230,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1230",
    "source": {
      "sourceString": "2022 US Open Silver",
      "year": 2022,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Visits",
      "place": 1,
      "name": "Visits"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n2 10\n3 20\n4 30\n1 40\n",
        "output": "90\n"
      }
    ]
  },
  "1231": {
    "id": 1231,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1231",
    "source": {
      "sourceString": "2022 US Open Silver",
      "year": 2022,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Subset Equality",
      "place": 2,
      "name": "Subset Equality"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "aabcd\ncaabd\n4\na\nac\nabd\nabcd\n",
        "output": "YNYN\n"
      }
    ]
  },
  "1232": {
    "id": 1232,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1232",
    "source": {
      "sourceString": "2022 US Open Silver",
      "year": 2022,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. COW Operations",
      "place": 3,
      "name": "COW Operations"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "COW\n6\n1 1\n1 2\n1 3\n2 2\n2 3\n3 3\n",
        "output": "YNNNYN\n"
      }
    ]
  },
  "1233": {
    "id": 1233,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1233",
    "source": {
      "sourceString": "2022 US Open Gold",
      "year": 2022,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Apple Catching",
      "place": 1,
      "name": "Apple Catching"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n2 5 10 100\n2 6 0 3\n2 8 10 7\n1 2 4 5\n1 4 7 6\n",
        "output": "10\n"
      },
      {
        "input": "5\n2 5 10 100\n2 6 0 3\n2 8 11 7\n1 2 4 5\n1 4 7 6\n",
        "output": "9\n"
      }
    ]
  },
  "1234": {
    "id": 1234,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1234",
    "source": {
      "sourceString": "2022 US Open Gold",
      "year": 2022,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Pair Programming",
      "place": 2,
      "name": "Pair Programming"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1\n0\n1\n3\n12+\n+02\n3\n0++\n++9\n4\n5+++\n+6+1\n",
        "output": "1\n3\n9\n9\n"
      }
    ]
  },
  "1235": {
    "id": 1235,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1235",
    "source": {
      "sourceString": "2022 US Open Gold",
      "year": 2022,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Balancing a Tree",
      "place": 3,
      "name": "Balancing a Tree"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 0\n3\n1 1\n0 100\n1 1\n6 7\n5\n1 2 3 4\n6 6\n1 6\n1 6\n1 6\n5 5\n3\n1 1\n0 10\n0 1\n9 10\n",
        "output": "3\n1\n4\n"
      },
      {
        "input": "3 1\n3\n1 1\n0 100\n1 1\n6 7\n5\n1 2 3 4\n6 6\n1 6\n1 6\n1 6\n5 5\n3\n1 1\n0 10\n0 1\n9 10\n",
        "output": "3\n3 1 6\n1\n6 5 5 5 5\n4\n5 1 9\n"
      }
    ]
  },
  "1236": {
    "id": 1236,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1236",
    "source": {
      "sourceString": "2022 US Open Platinum",
      "year": 2022,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. 262144 Revisited",
      "place": 1,
      "name": "262144 Revisited"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n1 3 1 2 1 10\n",
        "output": "115\n"
      }
    ]
  },
  "1237": {
    "id": 1237,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1237",
    "source": {
      "sourceString": "2022 US Open Platinum",
      "year": 2022,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Hoof and Brain",
      "place": 2,
      "name": "Hoof and Brain"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "9 10\n1 2\n2 3\n3 4\n4 7\n3 5\n1 6\n6 8\n8 9\n9 6\n7 2\n4\n1 5\n1 2\n1 6\n2 4\n",
        "output": "BHHB\n"
      }
    ]
  },
  "1238": {
    "id": 1238,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1238",
    "source": {
      "sourceString": "2022 US Open Platinum",
      "year": 2022,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Up Down Subsequence",
      "place": 3,
      "name": "Up Down Subsequence"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n1 5 3 4 2\nUDUD\n",
        "output": "4\n"
      },
      {
        "input": "5\n1 5 3 4 2\nUUDD\n",
        "output": "3\n"
      }
    ]
  },
  "1251": {
    "id": 1251,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1251",
    "source": {
      "sourceString": "2022 December Bronze",
      "year": 2022,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cow College",
      "place": 1,
      "name": "Cow College"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1 6 4 6\n",
        "output": "12 4\n"
      }
    ]
  },
  "1252": {
    "id": 1252,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1252",
    "source": {
      "sourceString": "2022 December Bronze",
      "year": 2022,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Feeding the Cows",
      "place": 2,
      "name": "Feeding the Cows"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n5 0\nGHHGG\n5 1\nGHHGG\n5 2\nGHHGG\n5 3\nGHHGG\n5 4\nGHHGG\n2 1\nGH\n",
        "output": "5\nGHHGG\n3\n.GH.G\n2\n..GH.\n2\n...GH\n2\n...HG\n2\nHG\n"
      }
    ]
  },
  "1253": {
    "id": 1253,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1253",
    "source": {
      "sourceString": "2022 December Bronze",
      "year": 2022,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Reverse Engineering",
      "place": 3,
      "name": "Reverse Engineering"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n\n1 3\n0 0\n0 0\n1 1\n\n2 4\n00 0\n01 1\n10 1\n11 1\n\n1 2\n0 1\n0 0\n\n2 4\n00 0\n01 1\n10 1\n11 0\n",
        "output": "OK\nOK\nLIE\nLIE\n"
      }
    ]
  },
  "1254": {
    "id": 1254,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1254",
    "source": {
      "sourceString": "2022 December Silver",
      "year": 2022,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Barn Tree",
      "place": 1,
      "name": "Barn Tree"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n2 1 4 5\n1 2\n2 3\n2 4\n",
        "output": "3\n3 2 1\n4 2 2\n2 1 1\n"
      }
    ]
  },
  "1255": {
    "id": 1255,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1255",
    "source": {
      "sourceString": "2022 December Silver",
      "year": 2022,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Circular Barn",
      "place": 2,
      "name": "Circular Barn"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n1\n4\n1\n9\n2\n2 3\n2\n7 10\n3\n4 9 4\n",
        "output": "Farmer Nhoj\nFarmer John\nFarmer John\nFarmer John\nFarmer Nhoj\n"
      }
    ]
  },
  "1256": {
    "id": 1256,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1256",
    "source": {
      "sourceString": "2022 December Silver",
      "year": 2022,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Range Reconstruction",
      "place": 3,
      "name": "Range Reconstruction"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n0 2 2\n0 1\n0\n",
        "output": "1 3 2\n"
      },
      {
        "input": "3\n0 1 1\n0 0\n0\n",
        "output": "0 1 1\n"
      },
      {
        "input": "4\n0 1 2 2\n0 1 1\n0 1\n0\n",
        "output": "1 2 3 2\n"
      },
      {
        "input": "4\n0 1 1 2\n0 0 2\n0 2\n0\n",
        "output": "1 2 2 0\n"
      }
    ]
  },
  "1257": {
    "id": 1257,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1257",
    "source": {
      "sourceString": "2022 December Gold",
      "year": 2022,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bribing Friends",
      "place": 1,
      "name": "Bribing Friends"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 10 8\n5 5 4\n6 7 3\n10 6 3\n",
        "output": "15\n"
      }
    ]
  },
  "1258": {
    "id": 1258,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1258",
    "source": {
      "sourceString": "2022 December Gold",
      "year": 2022,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Mountains",
      "place": 2,
      "name": "Mountains"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n2 4 3 1 5\n3\n4 3\n1 3\n3 2\n",
        "output": "7\n10\n7\n"
      }
    ]
  },
  "1259": {
    "id": 1259,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1259",
    "source": {
      "sourceString": "2022 December Gold",
      "year": 2022,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Strongest Friendship Group",
      "place": 3,
      "name": "Strongest Friendship Group"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "8 10\n1 2\n1 3\n1 4\n2 3\n2 4\n3 4\n1 5\n2 6\n3 7\n4 8\n",
        "output": "12\n"
      }
    ]
  },
  "1260": {
    "id": 1260,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1260",
    "source": {
      "sourceString": "2022 December Platinum",
      "year": 2022,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Breakdown",
      "place": 1,
      "name": "Breakdown"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 4\n10 4 4\n9 5 3\n2 1 6\n3 1\n2 3\n2 1\n3 2\n2 2\n1 3\n3 3\n1 1\n1 2\n",
        "output": "11\n18\n22\n22\n22\n-1\n-1\n-1\n-1\n"
      }
    ]
  },
  "1261": {
    "id": 1261,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1261",
    "source": {
      "sourceString": "2022 December Platinum",
      "year": 2022,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Making Friends",
      "place": 2,
      "name": "Making Friends"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "7 6\n1 3\n1 4\n7 1\n2 3\n2 4\n3 5\n",
        "output": "5\n"
      }
    ]
  },
  "1262": {
    "id": 1262,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1262",
    "source": {
      "sourceString": "2022 December Platinum",
      "year": 2022,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Palindromes",
      "place": 3,
      "name": "Palindromes"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "GHHGGHHGH\n",
        "output": "12\n"
      }
    ]
  },
  "1275": {
    "id": 1275,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1275",
    "source": {
      "sourceString": "2023 January Bronze",
      "year": 2023,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Leaders",
      "place": 1,
      "name": "Leaders"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\nGHHG\n2 4 3 4\n",
        "output": "1\n"
      },
      {
        "input": "3\nGGH\n2 3 3\n",
        "output": "2\n"
      }
    ]
  },
  "1276": {
    "id": 1276,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1276",
    "source": {
      "sourceString": "2023 January Bronze",
      "year": 2023,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Air Cownditioning II",
      "place": 2,
      "name": "Air Cownditioning II"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 4\n1 5 2\n7 9 3\n2 9 2 3\n1 6 2 8\n1 2 4 2\n6 9 1 5\n",
        "output": "10\n"
      }
    ]
  },
  "1277": {
    "id": 1277,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1277",
    "source": {
      "sourceString": "2023 January Bronze",
      "year": 2023,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Moo Operations",
      "place": 3,
      "name": "Moo Operations"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\nMOMMOM\nMMO\nMOO\n",
        "output": "4\n-1\n0\n"
      }
    ]
  },
  "1278": {
    "id": 1278,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1278",
    "source": {
      "sourceString": "2023 January Silver",
      "year": 2023,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Find and Replace",
      "place": 1,
      "name": "Find and Replace"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\nabc\nabc\nBBC\nABC\nabc\nbbc\nABCD\nBACD\n",
        "output": "0\n-1\n1\n3\n"
      }
    ]
  },
  "1279": {
    "id": 1279,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1279",
    "source": {
      "sourceString": "2023 January Silver",
      "year": 2023,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Following Directions",
      "place": 2,
      "name": "Following Directions"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\nRR 1\nDD 10\n100 500\n4\n1 1\n1 1\n1 1\n2 1\n",
        "output": "602\n701\n602\n701\n1501\n"
      }
    ]
  },
  "1280": {
    "id": 1280,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1280",
    "source": {
      "sourceString": "2023 January Silver",
      "year": 2023,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Moo Route",
      "place": 3,
      "name": "Moo Route"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n2 4\n",
        "output": "RRLRLL\n"
      },
      {
        "input": "3\n2 4 4\n",
        "output": "RRRLLRRLLL\n"
      }
    ]
  },
  "1281": {
    "id": 1281,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1281",
    "source": {
      "sourceString": "2023 January Gold",
      "year": 2023,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Find and Replace",
      "place": 1,
      "name": "Find and Replace"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 8 4\na ab\na bc\nc de\nb bbb\n",
        "output": "bdebbb\n"
      }
    ]
  },
  "1282": {
    "id": 1282,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1282",
    "source": {
      "sourceString": "2023 January Gold",
      "year": 2023,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Lights Off",
      "place": 2,
      "name": "Lights Off"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 3\n000 101\n101 100\n110 000\n111 000\n",
        "output": "0\n1\n3\n2\n"
      },
      {
        "input": "1 10\n1100010000 1000011000\n",
        "output": "2\n"
      }
    ]
  },
  "1283": {
    "id": 1283,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1283",
    "source": {
      "sourceString": "2023 January Gold",
      "year": 2023,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Moo Route",
      "place": 3,
      "name": "Moo Route"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n4 6\n",
        "output": "2\n"
      }
    ]
  },
  "1284": {
    "id": 1284,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1284",
    "source": {
      "sourceString": "2023 January Platinum",
      "year": 2023,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Tractor Paths",
      "place": 1,
      "name": "Tractor Paths"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "8 10\nLLLLRLLLLRRRRRRR\n11011010\n1 2\n1 3\n1 4\n1 5\n1 6\n1 7\n1 8\n2 3\n2 4\n2 5\n",
        "output": "1 2\n1 1\n1 2\n2 4\n2 3\n2 4\n2 3\n1 1\n1 2\n1 2\n"
      }
    ]
  },
  "1285": {
    "id": 1285,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1285",
    "source": {
      "sourceString": "2023 January Platinum",
      "year": 2023,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Mana Collection",
      "place": 2,
      "name": "Mana Collection"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 1\n1 10\n1 2 10\n4\n5 1\n5 2\n100 1\n100 2\n",
        "output": "5\n50\n100\n1090\n"
      },
      {
        "input": "4 8\n50000000 100000000 20000000 70000000\n1 2 20\n2 1 50\n2 3 90\n1 3 40\n3 1 10\n4 1 25\n1 4 5\n4 3 70\n3\n8 3\n1000000000 1\n500000 4\n",
        "output": "160000000\n239999988050000000\n119992550000000\n"
      }
    ]
  },
  "1286": {
    "id": 1286,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1286",
    "source": {
      "sourceString": "2023 January Platinum",
      "year": 2023,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Subtree Activation",
      "place": 3,
      "name": "Subtree Activation"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n1 1\n",
        "output": "6\n"
      }
    ]
  },
  "1299": {
    "id": 1299,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1299",
    "source": {
      "sourceString": "2023 February Bronze",
      "year": 2023,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Hungry Cow",
      "place": 1,
      "name": "Hungry Cow"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1 5\n1 2\n",
        "output": "2\n"
      },
      {
        "input": "2 5\n1 2\n5 10\n",
        "output": "3\n"
      },
      {
        "input": "2 5\n1 10\n5 10\n",
        "output": "5\n"
      }
    ]
  },
  "1300": {
    "id": 1300,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1300",
    "source": {
      "sourceString": "2023 February Bronze",
      "year": 2023,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Stamp Grid",
      "place": 2,
      "name": "Stamp Grid"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n\n2\n**\n*.\n1\n*\n\n3\n.**\n.**\n***\n2\n.*\n**\n\n3\n...\n.*.\n...\n3\n.*.\n...\n...\n\n3\n**.\n.**\n..*\n2\n.*\n*.\n",
        "output": "YES\nYES\nNO\nYES\n"
      }
    ]
  },
  "1301": {
    "id": 1301,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1301",
    "source": {
      "sourceString": "2023 February Bronze",
      "year": 2023,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Watching Mooloo",
      "place": 3,
      "name": "Watching Mooloo"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 4\n7 9\n",
        "output": "7\n"
      },
      {
        "input": "2 3\n1 10\n",
        "output": "8\n"
      }
    ]
  },
  "1302": {
    "id": 1302,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1302",
    "source": {
      "sourceString": "2023 February Silver",
      "year": 2023,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bakery",
      "place": 1,
      "name": "Bakery"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n\n3 7 9\n4 3 18\n2 4 19\n1 1 6\n\n5 7 3\n5 9 45\n5 2 31\n6 4 28\n4 1 8\n5 2 22\n",
        "output": "11\n6\n"
      }
    ]
  },
  "1303": {
    "id": 1303,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1303",
    "source": {
      "sourceString": "2023 February Silver",
      "year": 2023,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cow-libi",
      "place": 2,
      "name": "Cow-libi"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 4\n0 0 100\n50 0 200\n0 50 50\n1000 1000 0\n50 0 200\n10 0 170\n",
        "output": "2\n"
      }
    ]
  },
  "1304": {
    "id": 1304,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1304",
    "source": {
      "sourceString": "2023 February Silver",
      "year": 2023,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Moo Route II",
      "place": 3,
      "name": "Moo Route II"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 3\n1 0 2 10\n2 11 2 0\n2 1 3 20\n10 1 10\n",
        "output": "0\n0\n20\n"
      },
      {
        "input": "3 3\n1 0 2 10\n2 10 2 0\n2 1 3 20\n10 1 10\n",
        "output": "0\n10\n-1\n"
      }
    ]
  },
  "1305": {
    "id": 1305,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1305",
    "source": {
      "sourceString": "2023 February Gold",
      "year": 2023,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Equal Sum Subarrays",
      "place": 1,
      "name": "Equal Sum Subarrays"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n2 -3\n",
        "output": "2\n3\n"
      },
      {
        "input": "3\n3 -10 4\n",
        "output": "1\n6\n1\n"
      }
    ]
  },
  "1306": {
    "id": 1306,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1306",
    "source": {
      "sourceString": "2023 February Gold",
      "year": 2023,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Fertilizing Pastures",
      "place": 2,
      "name": "Fertilizing Pastures"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 0\n1 1\n1 2\n3 1\n3 4\n",
        "output": "8 21\n"
      },
      {
        "input": "5 1\n1 1\n1 2\n3 1\n3 4\n",
        "output": "6 29\n"
      }
    ]
  },
  "1307": {
    "id": 1307,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1307",
    "source": {
      "sourceString": "2023 February Gold",
      "year": 2023,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Piling Papers",
      "place": 3,
      "name": "Piling Papers"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 13 327\n1 2 3 4 5\n3\n1 2\n1 3\n2 5\n",
        "output": "2\n18\n34\n"
      }
    ]
  },
  "1308": {
    "id": 1308,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1308",
    "source": {
      "sourceString": "2023 February Platinum",
      "year": 2023,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Hungry Cow",
      "place": 1,
      "name": "Hungry Cow"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n4 3\n1 5\n1 2\n",
        "output": "15\n36\n18\n"
      },
      {
        "input": "9\n1 89\n30 7\n101 26\n1 24\n5 1\n60 4\n5 10\n101 0\n1 200\n",
        "output": "4005\n4656\n7607\n3482\n3507\n3753\n4058\n1107\n24531\n"
      }
    ]
  },
  "1309": {
    "id": 1309,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1309",
    "source": {
      "sourceString": "2023 February Platinum",
      "year": 2023,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Problem Setting",
      "place": 2,
      "name": "Problem Setting"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 1\nEHE\n",
        "output": "9\n"
      },
      {
        "input": "10 6\nEHEEEHHEEH\nEHHHEEHHHE\nEHEHEHEEHH\nHEHEEEHEEE\nHHEEHEEEHE\nEHHEEEEEHE\n",
        "output": "33\n"
      }
    ]
  },
  "1310": {
    "id": 1310,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1310",
    "source": {
      "sourceString": "2023 February Platinum",
      "year": 2023,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Watching Cowflix",
      "place": 3,
      "name": "Watching Cowflix"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n10001\n1 2\n2 3\n3 4\n4 5\n",
        "output": "4\n6\n8\n9\n10\n"
      },
      {
        "input": "7\n0001010\n7 4\n5 6\n7 2\n5 1\n6 3\n2 5\n",
        "output": "4\n6\n8\n9\n10\n11\n12\n"
      }
    ]
  },
  "1323": {
    "id": 1323,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1323",
    "source": {
      "sourceString": "2023 US Open Bronze",
      "year": 2023,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. FEB",
      "place": 1,
      "name": "FEB"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\nBEEF\n",
        "output": "2\n1\n2\n"
      },
      {
        "input": "9\nFEBFEBFEB\n",
        "output": "2\n2\n3\n"
      },
      {
        "input": "10\nBFFFFFEBFE\n",
        "output": "3\n2\n4\n6\n"
      }
    ]
  },
  "1324": {
    "id": 1324,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1324",
    "source": {
      "sourceString": "2023 US Open Bronze",
      "year": 2023,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Moo Language",
      "place": 2,
      "name": "Moo Language"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n1 1 1\nbessie noun\n10 5 4\nbessie noun\ntaught transitive-verb\nflew intransitive-verb\nelsie noun\nfarmer noun\njohn noun\nand conjunction\nand conjunction\nnhoj noun\nmooed intransitive-verb\n24 5 4\nbut conjunction\nbessie noun\ntaught transitive-verb\nflew intransitive-verb\nelsie noun\nfarmer noun\njohn noun\nand conjunction\nand conjunction\nnhoj noun\nmooed intransitive-verb\nbob noun\nimpressed transitive-verb\ncow noun\nimpressed transitive-verb\nleaped intransitive-verb\nelsie noun\nbella noun\nbuttercup noun\npushed transitive-verb\nmooed intransitive-verb\nenvy noun\njohn noun\nnhoj noun\n",
        "output": "0\n\n9\nnhoj mooed. farmer taught elsie, bessie and john flew.\n23\nnhoj mooed. nhoj impressed john, farmer, elsie, bessie and cow impressed bob. bella pushed elsie and buttercup flew. envy mooed but john leaped.\n"
      }
    ]
  },
  "1325": {
    "id": 1325,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1325",
    "source": {
      "sourceString": "2023 US Open Bronze",
      "year": 2023,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Rotate and Shift",
      "place": 3,
      "name": "Rotate and Shift"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 3 4\n0 2 3\n",
        "output": "1 2 3 4 0\n"
      }
    ]
  },
  "1326": {
    "id": 1326,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1326",
    "source": {
      "sourceString": "2023 US Open Silver",
      "year": 2023,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Milk Sum",
      "place": 1,
      "name": "Milk Sum"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n1 10 4 2 6\n3\n2 1\n2 8\n4 5\n",
        "output": "55\n81\n98\n"
      }
    ]
  },
  "1327": {
    "id": 1327,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1327",
    "source": {
      "sourceString": "2023 US Open Silver",
      "year": 2023,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Field Day",
      "place": 2,
      "name": "Field Day"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 3\nGHGGH\nGHHHH\nHGHHG\n",
        "output": "5\n3\n5\n"
      }
    ]
  },
  "1328": {
    "id": 1328,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1328",
    "source": {
      "sourceString": "2023 US Open Silver",
      "year": 2023,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Pareidolia",
      "place": 3,
      "name": "Pareidolia"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "bessiebessie\n",
        "output": "14\n"
      },
      {
        "input": "abcdefghssijebessie\n",
        "output": "28\n"
      }
    ]
  },
  "1329": {
    "id": 1329,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1329",
    "source": {
      "sourceString": "2023 US Open Gold",
      "year": 2023,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Custodial Cleanup",
      "place": 1,
      "name": "Custodial Cleanup"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n\n5 5\n4 3 2 4 3\n3 4 3 4 2\n2 3 4 4 3\n1 2\n2 3\n3 1\n4 1\n4 5\n\n4 3\n3 2 4 1\n2 3 4 4\n4 2 3 4\n4 2\n4 1\n4 3\n",
        "output": "YES\nNO\n"
      },
      {
        "input": "5\n\n2 0\n1 2\n2 2\n2 2\n\n2 1\n1 1\n2 1\n2 1\n1 2\n\n2 1\n1 1\n2 1\n1 2\n1 2\n\n2 1\n1 1\n1 2\n2 1\n1 2\n\n5 4\n1 2 3 4 4\n2 3 5 4 2\n5 3 2 4 2\n1 2\n1 3\n1 4\n4 5\n",
        "output": "YES\nYES\nNO\nYES\nNO\n"
      }
    ]
  },
  "1330": {
    "id": 1330,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1330",
    "source": {
      "sourceString": "2023 US Open Gold",
      "year": 2023,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Pareidolia",
      "place": 2,
      "name": "Pareidolia"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "besssie\n1 1 5 4 6 1 1\n",
        "output": "1\n4\n"
      },
      {
        "input": "bebesconsiete\n6 5 2 3 6 5 7 9 8 1 4 5 1\n",
        "output": "1\n21\n"
      },
      {
        "input": "besgiraffesiebessibessie\n1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1\n",
        "output": "2\n7\n"
      }
    ]
  },
  "1331": {
    "id": 1331,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1331",
    "source": {
      "sourceString": "2023 US Open Gold",
      "year": 2023,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Tree Merging",
      "place": 3,
      "name": "Tree Merging"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1\n8\n7 5\n2 1\n4 2\n5 1\n3 2\n8 5\n6 2\n4\n8 5\n5 1\n6 5\n",
        "output": "4\n2 5\n4 8\n3 8\n7 8\n"
      }
    ]
  },
  "1332": {
    "id": 1332,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1332",
    "source": {
      "sourceString": "2023 US Open Platinum",
      "year": 2023,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Pareidolia",
      "place": 1,
      "name": "Pareidolia"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "bessiebessie\n3\n3 l\n7 s\n3 s\n",
        "output": "14\n7\n1\n7\n"
      }
    ]
  },
  "1333": {
    "id": 1333,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1333",
    "source": {
      "sourceString": "2023 US Open Platinum",
      "year": 2023,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Good Bitstrings",
      "place": 2,
      "name": "Good Bitstrings"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n1 1\n3 5\n4 7\n8 20\n4 10\n27 21\n",
        "output": "1\n5\n7\n10\n6\n13\n"
      }
    ]
  },
  "1334": {
    "id": 1334,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1334",
    "source": {
      "sourceString": "2023 US Open Platinum",
      "year": 2023,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Triples of Cows",
      "place": 3,
      "name": "Triples of Cows"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n1 2\n2 3\n",
        "output": "2\n0\n0\n"
      },
      {
        "input": "4\n1 2\n1 3\n1 4\n",
        "output": "6\n6\n0\n0\n"
      },
      {
        "input": "5\n3 5\n5 1\n1 4\n1 2\n",
        "output": "8\n10\n2\n0\n0\n"
      }
    ]
  },
  "1347": {
    "id": 1347,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1347",
    "source": {
      "sourceString": "2023 December Bronze",
      "year": 2023,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Candy Cane Feast",
      "place": 1,
      "name": "Candy Cane Feast"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 2\n3 2 5\n6 1\n",
        "output": "7\n2\n7\n"
      }
    ]
  },
  "1348": {
    "id": 1348,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1348",
    "source": {
      "sourceString": "2023 December Bronze",
      "year": 2023,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cowntact Tracing 2",
      "place": 2,
      "name": "Cowntact Tracing 2"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n11111\n",
        "output": "1\n"
      },
      {
        "input": "6\n011101\n",
        "output": "4\n"
      }
    ]
  },
  "1349": {
    "id": 1349,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1349",
    "source": {
      "sourceString": "2023 December Bronze",
      "year": 2023,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Farmer John Actually Farms",
      "place": 3,
      "name": "Farmer John Actually Farms"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n1\n10\n1\n0\n2\n7 3\n8 10\n1 0\n2\n3 6\n10 8\n0 1\n2\n7 3\n8 9\n1 0\n2\n7 7\n8 8\n0 1\n2\n7 3\n8 8\n1 0\n",
        "output": "0\n3\n2\n5\n-1\n-1\n"
      },
      {
        "input": "2\n5\n7 4 1 10 12\n3 4 5 2 1\n2 1 0 3 4\n5\n4 10 12 7 1\n3 1 1 4 5\n2 4 3 1 0\n",
        "output": "4\n7\n"
      }
    ]
  },
  "1350": {
    "id": 1350,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1350",
    "source": {
      "sourceString": "2023 December Silver",
      "year": 2023,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bovine Acrobatics",
      "place": 1,
      "name": "Bovine Acrobatics"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 5 2\n9 4\n7 6\n5 5\n",
        "output": "14\n"
      },
      {
        "input": "3 5 3\n5 5\n7 6\n9 4\n",
        "output": "9\n"
      }
    ]
  },
  "1351": {
    "id": 1351,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1351",
    "source": {
      "sourceString": "2023 December Silver",
      "year": 2023,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cycle Correspondence",
      "place": 2,
      "name": "Cycle Correspondence"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6 3\n1 2 3\n2 3 1\n",
        "output": "6\n"
      },
      {
        "input": "6 3\n1 2 3\n4 5 6\n",
        "output": "0\n"
      },
      {
        "input": "6 4\n1 2 3 4\n4 3 2 5\n",
        "output": "4\n"
      }
    ]
  },
  "1352": {
    "id": 1352,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1352",
    "source": {
      "sourceString": "2023 December Silver",
      "year": 2023,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Target Practice",
      "place": 3,
      "name": "Target Practice"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 7\n0 -1 1\nLFFRFRR\n",
        "output": "3\n"
      },
      {
        "input": "1 5\n0\nFFFFF\n",
        "output": "1\n"
      },
      {
        "input": "5 6\n1 2 3 4 5\nFFRFRF\n",
        "output": "3\n"
      }
    ]
  },
  "1353": {
    "id": 1353,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1353",
    "source": {
      "sourceString": "2023 December Gold",
      "year": 2023,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Flight Routes",
      "place": 1,
      "name": "Flight Routes"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n11\n1\n",
        "output": "2\n"
      },
      {
        "input": "5\n1111\n101\n01\n1\n",
        "output": "6\n"
      }
    ]
  },
  "1354": {
    "id": 1354,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1354",
    "source": {
      "sourceString": "2023 December Gold",
      "year": 2023,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Minimum Longest Trip",
      "place": 2,
      "name": "Minimum Longest Trip"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 5\n4 3 10\n4 2 10\n3 1 10\n2 1 10\n4 1 10\n",
        "output": "0 0\n1 10\n1 10\n2 20\n"
      },
      {
        "input": "4 5\n4 3 4\n4 2 2\n3 1 5\n2 1 10\n4 1 1\n",
        "output": "0 0\n1 10\n1 5\n2 12\n"
      },
      {
        "input": "4 5\n4 3 2\n4 2 2\n3 1 5\n2 1 10\n4 1 1\n",
        "output": "0 0\n1 10\n1 5\n2 7\n"
      },
      {
        "input": "4 5\n4 3 2\n4 2 2\n3 1 10\n2 1 5\n4 1 1\n",
        "output": "0 0\n1 5\n1 10\n2 7\n"
      }
    ]
  },
  "1355": {
    "id": 1355,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1355",
    "source": {
      "sourceString": "2023 December Gold",
      "year": 2023,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Haybale Distribution",
      "place": 3,
      "name": "Haybale Distribution"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n1 4 2 3 10\n4\n1 1\n2 1\n1 2\n1 4\n",
        "output": "11\n13\n18\n30\n"
      }
    ]
  },
  "1356": {
    "id": 1356,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1356",
    "source": {
      "sourceString": "2023 December Platinum",
      "year": 2023,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cowntact Tracing",
      "place": 1,
      "name": "Cowntact Tracing"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n11111\n1 2\n2 3\n3 4\n4 5\n6\n5\n4\n3\n2\n1\n0\n",
        "output": "1\n1\n1\n1\n2\n5\n"
      },
      {
        "input": "10\n1111111111\n1 2\n2 3\n2 4\n2 5\n2 6\n6 7\n7 8\n8 9\n9 10\n11\n0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n",
        "output": "10\n3\n2\n1\n1\n1\n1\n1\n1\n1\n1\n"
      },
      {
        "input": "5\n11100\n1 2\n2 3\n3 4\n4 5\n6\n0\n1\n2\n3\n4\n5\n",
        "output": "3\n1\n1\n-1\n-1\n-1\n"
      }
    ]
  },
  "1357": {
    "id": 1357,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1357",
    "source": {
      "sourceString": "2023 December Platinum",
      "year": 2023,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. A Graph Problem",
      "place": 2,
      "name": "A Graph Problem"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 2\n1 2\n2 3\n",
        "output": "12\n12\n21\n"
      },
      {
        "input": "5 6\n1 2\n3 4\n2 4\n2 3\n2 5\n1 5\n",
        "output": "1325\n1325\n2315\n2315\n5132\n"
      },
      {
        "input": "15 14\n1 2\n2 3\n3 4\n4 5\n5 6\n6 7\n7 8\n8 9\n9 10\n10 11\n11 12\n12 13\n13 14\n14 15\n",
        "output": "678925929\n678925929\n678862929\n678787329\n678709839\n678632097\n178554320\n218476543\n321398766\n431520989\n542453212\n653475435\n764507558\n875540761\n986574081\n"
      }
    ]
  },
  "1358": {
    "id": 1358,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1358",
    "source": {
      "sourceString": "2023 December Platinum",
      "year": 2023,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Train Scheduling",
      "place": 3,
      "name": "Train Scheduling"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1 95\nB 63\n",
        "output": "0\n"
      },
      {
        "input": "4 1\nB 3\nB 2\nA 1\nA 3\n",
        "output": "1\n"
      },
      {
        "input": "4 10\nA 1\nB 2\nA 3\nA 21\n",
        "output": "13\n"
      },
      {
        "input": "8 125000000000\nB 17108575619\nB 57117098303\nA 42515717584\nB 26473500855\nA 108514697534\nB 110763448122\nB 117731666682\nA 29117227954\n",
        "output": "548047356974\n"
      }
    ]
  },
  "1371": {
    "id": 1371,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1371",
    "source": {
      "sourceString": "2024 January Bronze",
      "year": 2024,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Majority Opinion",
      "place": 1,
      "name": "Majority Opinion"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n5\n1 2 2 2 3\n6\n1 2 3 1 2 3\n6\n1 1 1 2 2 2\n3\n3 2 3\n2\n2 1\n",
        "output": "2\n-1\n1 2\n3\n-1\n"
      }
    ]
  },
  "1372": {
    "id": 1372,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1372",
    "source": {
      "sourceString": "2024 January Bronze",
      "year": 2024,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cannonball",
      "place": 2,
      "name": "Cannonball"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 2\n0 1\n1 1\n1 2\n0 1\n1 1\n",
        "output": "1\n"
      },
      {
        "input": "6 4\n0 3\n1 1\n1 2\n1 1\n0 1\n1 1\n",
        "output": "3\n"
      }
    ]
  },
  "1373": {
    "id": 1373,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1373",
    "source": {
      "sourceString": "2024 January Bronze",
      "year": 2024,
      "contest": "January",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Balancing Bacteria",
      "place": 3,
      "name": "Balancing Bacteria"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n-1 3\n",
        "output": "6\n"
      },
      {
        "input": "5\n1 3 -2 -7 5\n",
        "output": "26\n"
      }
    ]
  },
  "1374": {
    "id": 1374,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1374",
    "source": {
      "sourceString": "2024 January Silver",
      "year": 2024,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cowmpetency",
      "place": 1,
      "name": "Cowmpetency"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1\n7 3 5\n1 0 2 3 0 4 0\n1 2\n3 4\n4 5\n",
        "output": "1 2 2 3 4 4 1\n"
      },
      {
        "input": "5\n7 6 10\n0 0 0 0 0 0 0\n1 2\n2 3\n3 4\n4 5\n5 6\n6 7\n8 4 9\n0 0 0 0 1 6 0 6\n1 3\n6 7\n4 7\n2 3\n2 1 1\n0 0\n1 2\n10 4 10\n1 2 0 2 1 5 8 6 0 3\n4 7\n1 2\n5 7\n3 7\n10 2 8\n1 0 0 0 0 5 7 0 0 0\n4 6\n6 9\n",
        "output": "1 2 3 4 5 6 7\n1 1 2 6 1 6 7 6\n-1\n1 2 5 2 1 5 8 6 1 3\n-1\n"
      }
    ]
  },
  "1375": {
    "id": 1375,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1375",
    "source": {
      "sourceString": "2024 January Silver",
      "year": 2024,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Potion Farming",
      "place": 2,
      "name": "Potion Farming"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n5 4 3 2 1\n1 2\n1 3\n3 4\n3 5\n",
        "output": "2\n"
      }
    ]
  },
  "1376": {
    "id": 1376,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1376",
    "source": {
      "sourceString": "2024 January Silver",
      "year": 2024,
      "contest": "January",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Cowlendar",
      "place": 3,
      "name": "Cowlendar"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "12\n31 28 31 30 31 30 31 31 30 31 30 31\n",
        "output": "28\n"
      },
      {
        "input": "4\n31 35 28 29\n",
        "output": "23\n"
      }
    ]
  },
  "1377": {
    "id": 1377,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1377",
    "source": {
      "sourceString": "2024 January Gold",
      "year": 2024,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Walking in Manhattan",
      "place": 1,
      "name": "Walking in Manhattan"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 5\nV 7\nH 4\nH 5\nV 6\n6 3 10\n6 4 10\n6 5 10\n6 6 10\n100 4 10\n",
        "output": "14 5\n7 13\n6 15\n6 16\n110 4\n"
      }
    ]
  },
  "1378": {
    "id": 1378,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1378",
    "source": {
      "sourceString": "2024 January Gold",
      "year": 2024,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Cowmpetency",
      "place": 2,
      "name": "Cowmpetency"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6 2 3\n2 3\n4 5\n",
        "output": "6\n"
      },
      {
        "input": "10 1 20\n1 3\n",
        "output": "399988086\n"
      }
    ]
  },
  "1379": {
    "id": 1379,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1379",
    "source": {
      "sourceString": "2024 January Gold",
      "year": 2024,
      "contest": "January",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Nap Sort",
      "place": 3,
      "name": "Nap Sort"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n5\n1 2 4 5 100000000000\n5\n17 53 4 33 44\n4\n3 5 5 5\n6\n2 5 100 1 4 5\n",
        "output": "6\n15\n5\n6\n"
      }
    ]
  },
  "1380": {
    "id": 1380,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1380",
    "source": {
      "sourceString": "2024 January Platinum",
      "year": 2024,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Island Vacation",
      "place": 1,
      "name": "Island Vacation"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n\n3 2\n0 10 111111112\n1 3\n2 3\n\n6 5\n500000004 0 0 0 0 0\n1 5\n1 3\n4 5\n5 6\n1 2\n",
        "output": "0 888888896 111111112\n500000004 166666668 166666668 83333334 0 83333334\n"
      },
      {
        "input": "2\n\n5 5\n333333336 333333336 0 0 0\n1 2\n2 3\n3 4\n4 5\n1 5\n\n5 5\n0 0 0 0 0\n1 2\n2 3\n2 4\n1 4\n1 5\n",
        "output": "777777784 222222224 0 0 0\n0 0 333333336 0 666666672\n"
      },
      {
        "input": "1\n\n11 13\n2 3 4 5 6 7 8 9 10 11 12\n1 2\n1 3\n2 3\n2 4\n4 5\n2 5\n4 8\n5 9\n2 6\n6 7\n2 7\n6 10\n5 11\n",
        "output": "133332478 200000394 577778352 999999971 399999938 933333282 355555536 800000020 18 600000029 18\n"
      }
    ]
  },
  "1381": {
    "id": 1381,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1381",
    "source": {
      "sourceString": "2024 January Platinum",
      "year": 2024,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Merging Cells",
      "place": 2,
      "name": "Merging Cells"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n1 1 1\n",
        "output": "0\n500000004\n500000004\n"
      },
      {
        "input": "4\n3 1 1 1\n",
        "output": "666666672\n0\n166666668\n166666668\n"
      }
    ]
  },
  "1382": {
    "id": 1382,
    "url": "http://www.usaco.org/index.php?page=viewproblem2&cpid=1382",
    "source": {
      "sourceString": "2024 January Platinum",
      "year": 2024,
      "contest": "January",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Mooball Teams III",
      "place": 3,
      "name": "Mooball Teams III"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n1 2\n2 1\n",
        "output": "2\n"
      },
      {
        "input": "3\n1 1\n2 2\n3 3\n",
        "output": "10\n"
      },
      {
        "input": "3\n1 1\n2 3\n3 2\n",
        "output": "12\n"
      },
      {
        "input": "40\n1 1\n2 2\n3 3\n4 4\n5 5\n6 6\n7 7\n8 8\n9 9\n10 10\n11 11\n12 12\n13 13\n14 14\n15 15\n16 16\n17 17\n18 18\n19 19\n20 20\n21 21\n22 22\n23 23\n24 24\n25 25\n26 26\n27 27\n28 28\n29 29\n30 30\n31 31\n32 32\n33 33\n34 34\n35 35\n36 36\n37 37\n38 38\n39 39\n40 40\n",
        "output": "441563023\n"
      }
    ]
  },
  "1395": {
    "id": 1395,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1395",
    "source": {
      "sourceString": "2024 February Bronze",
      "year": 2024,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Palindrome Game",
      "place": 1,
      "name": "Palindrome Game"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n8\n10\n12\n",
        "output": "B\nE\nB\n"
      }
    ]
  },
  "1396": {
    "id": 1396,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1396",
    "source": {
      "sourceString": "2024 February Bronze",
      "year": 2024,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Milk Exchange",
      "place": 2,
      "name": "Milk Exchange"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 1\nRRL\n1 1 1\n",
        "output": "2\n"
      },
      {
        "input": "5 20\nLLLLL\n3 3 2 3 3\n",
        "output": "14\n"
      },
      {
        "input": "9 5\nRRRLRRLLR\n5 8 4 9 3 4 9 5 4\n",
        "output": "38\n"
      }
    ]
  },
  "1397": {
    "id": 1397,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1397",
    "source": {
      "sourceString": "2024 February Bronze",
      "year": 2024,
      "contest": "February",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Maximizing Productivity",
      "place": 3,
      "name": "Maximizing Productivity"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 5\n3 5 7 9 12\n4 2 3 3 8\n1 5\n1 6\n3 3\n4 2\n5 1\n",
        "output": "YES\nNO\nYES\nYES\nNO\n"
      }
    ]
  },
  "1398": {
    "id": 1398,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1398",
    "source": {
      "sourceString": "2024 February Silver",
      "year": 2024,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Target Practice II",
      "place": 1,
      "name": "Target Practice II"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n2 1\n1 3 6\n4 6 3\n1 -1 2 -2 3 -3 4 -4\n2 1\n1 3 6\n4 6 3\n1 1 2 2 3 3 4 4\n2 1\n1 3 3\n4 6 3\n1 -1 2 -2 3 -3 4 -4\n",
        "output": "17\n-1\n11\n"
      }
    ]
  },
  "1399": {
    "id": 1399,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1399",
    "source": {
      "sourceString": "2024 February Silver",
      "year": 2024,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Test Tubes",
      "place": 2,
      "name": "Test Tubes"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n4 1\n1221\n2211\n4 2\n1221\n2211\n4 3\n1221\n2211\n6 3\n222222\n111112\n4 3\n1121\n1222\n4 2\n1121\n1222\n",
        "output": "4\n4\n1 2\n1 3\n2 1\n3 2\n4\n1 2\n1 3\n2 1\n3 2\n1\n2 1\n5\n2 3\n1 2\n1 3\n1 2\n3 1\n6\n2 3\n1 2\n1 3\n1 2\n2 1\n3 2\n"
      }
    ]
  },
  "1400": {
    "id": 1400,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1400",
    "source": {
      "sourceString": "2024 February Silver",
      "year": 2024,
      "contest": "February",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Moorbles",
      "place": 3,
      "name": "Moorbles"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n10 3 2\n2 5\n1 3\n1 3\n10 3 3\n2 7 5\n8 3 4\n2 5 6\n",
        "output": "Even Even Odd\n-1\n"
      },
      {
        "input": "1\n20 8 2\n3 5\n3 5\n3 5\n3 5\n3 5\n3 5\n3 5\n3 5\n",
        "output": "Even Even Even Odd Even Odd Even Odd\n"
      }
    ]
  },
  "1401": {
    "id": 1401,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1401",
    "source": {
      "sourceString": "2024 February Gold",
      "year": 2024,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bessla Motors",
      "place": 1,
      "name": "Bessla Motors"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 3 1 4 1\n1 2 3\n1 3 5\n2 3 2\n",
        "output": "1\n2\n"
      },
      {
        "input": "4 3 2 101 2\n1 2 1\n2 3 100\n1 4 10\n",
        "output": "2\n3\n4\n"
      },
      {
        "input": "4 3 2 100 2\n1 2 1\n2 3 100\n1 4 10\n",
        "output": "1\n4\n"
      }
    ]
  },
  "1402": {
    "id": 1402,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1402",
    "source": {
      "sourceString": "2024 February Gold",
      "year": 2024,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Milk Exchange",
      "place": 2,
      "name": "Milk Exchange"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\n2 2 2 1 2 1\n",
        "output": "8\n7\n6\n6\n6\n6\n"
      },
      {
        "input": "8\n3 8 6 4 8 3 8 1\n",
        "output": "25\n20\n17\n14\n12\n10\n8\n8\n"
      },
      {
        "input": "10\n9 9 10 10 6 8 2 1000000000 1000000000 1000000000\n",
        "output": "2000000053\n1000000054\n56\n49\n42\n35\n28\n24\n20\n20\n"
      }
    ]
  },
  "1403": {
    "id": 1403,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1403",
    "source": {
      "sourceString": "2024 February Gold",
      "year": 2024,
      "contest": "February",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Quantum Moochanics",
      "place": 3,
      "name": "Quantum Moochanics"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n2\n1 11\n1 1\n2\n1 12\n1 1\n2\n1 11\n4 6\n2\n1 11\n4 5\n",
        "output": "9 9\n11 11\n1 1\n3 3\n"
      },
      {
        "input": "2\n4\n1 3 5 8\n1 1 1 1\n4\n1 4 5 8\n1 1 1 1\n",
        "output": "1 1 3 3\n7 2 2 7\n"
      }
    ]
  },
  "1404": {
    "id": 1404,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1404",
    "source": {
      "sourceString": "2024 February Platinum",
      "year": 2024,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Lazy Cow",
      "place": 1,
      "name": "Lazy Cow"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n5 11\n6 10\n10 15\n10 30\n",
        "output": "21\n21\n25\n90\n"
      },
      {
        "input": "2\n100 5\n100 1000000000000\n",
        "output": "5\n627323485\n"
      },
      {
        "input": "20\n303590 482848034083\n180190 112716918480\n312298 258438719980\n671877 605558355401\n662137 440411075067\n257593 261569032231\n766172 268433874550\n8114 905639446594\n209577 11155741818\n227183 874665904430\n896141 55422874585\n728247 456681845046\n193800 632739601224\n443005 623200306681\n330325 955479269245\n377303 177279745225\n880246 22559233849\n58084 155169139314\n813702 758370488574\n929760 785245728062\n",
        "output": "108753959\n108753959\n108753959\n148189797\n148189797\n148189797\n148189797\n32884410\n32884410\n32884410\n32884410\n32884410\n32884410\n32884410\n3883759\n3883759\n3883759\n3883759\n3883759\n3883759\n"
      }
    ]
  },
  "1405": {
    "id": 1405,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1405",
    "source": {
      "sourceString": "2024 February Platinum",
      "year": 2024,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Minimum Sum of Maximums",
      "place": 2,
      "name": "Minimum Sum of Maximums"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 0\n1 100 10\n\n",
        "output": "110\n"
      },
      {
        "input": "3 1\n1 100 10\n3\n",
        "output": "110\n"
      },
      {
        "input": "3 1\n1 100 10\n2\n",
        "output": "200\n"
      },
      {
        "input": "4 2\n1 3 2 4\n2 3\n",
        "output": "9\n"
      }
    ]
  },
  "1406": {
    "id": 1406,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1406",
    "source": {
      "sourceString": "2024 February Platinum",
      "year": 2024,
      "contest": "February",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Infinite Adventure",
      "place": 3,
      "name": "Infinite Adventure"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 4\n1 2 1 2 8\n2\n3 4\n4\n2 3\n5 5 5 5 5 1 5 5\n2 4 3\n3 3 6\n5 3 2\n5 3 7\n",
        "output": "2\n2\n5\n4\n"
      },
      {
        "input": "5 5\n1 2 1 2 8\n2\n3 4\n4\n2 3\n5 5 5 5 5 1 5 5\n2 4 3\n3 2 6\n5 3 2\n5 3 7\n5 3 1000000000000000000\n",
        "output": "2\n3\n5\n4\n2\n"
      }
    ]
  },
  "1419": {
    "id": 1419,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1419",
    "source": {
      "sourceString": "2024 US Open Bronze",
      "year": 2024,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Logical Moos",
      "place": 1,
      "name": "Logical Moos"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 7\nfalse and true or true\n1 1 false\n1 3 true\n1 5 false\n3 3 true\n3 3 false\n5 5 false\n5 5 true\n",
        "output": "NYYYNYY\n"
      },
      {
        "input": "13 4\nfalse or true and false and false and true or true and false\n1 5 false\n3 11 true\n3 11 false\n13 13 true\n",
        "output": "YNYY\n"
      }
    ]
  },
  "1420": {
    "id": 1420,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1420",
    "source": {
      "sourceString": "2024 US Open Bronze",
      "year": 2024,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Walking Along a Fence",
      "place": 2,
      "name": "Walking Along a Fence"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 4\n0 0\n2 0\n2 2\n0 2\n0 0 0 2\n0 2 1 0\n2 1 0 2\n1 0 1 2\n1 2 1 0\n",
        "output": "2\n3\n3\n4\n4\n"
      }
    ]
  },
  "1421": {
    "id": 1421,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1421",
    "source": {
      "sourceString": "2024 US Open Bronze",
      "year": 2024,
      "contest": "US Open",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Farmer John's Favorite Permutation",
      "place": 3,
      "name": "Farmer John's Favorite Permutation"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5\n2\n1\n2\n2\n4\n1 1 1\n4\n2 1 1\n4\n3 2 1\n",
        "output": "1 2\n-1\n-1\n3 1 2 4\n1 2 3 4\n"
      }
    ]
  },
  "1422": {
    "id": 1422,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1422",
    "source": {
      "sourceString": "2024 US Open Silver",
      "year": 2024,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Bessie's Interview",
      "place": 1,
      "name": "Bessie's Interview"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6 3\n3 1 4159 2 6 5\n",
        "output": "8\n110\n"
      }
    ]
  },
  "1423": {
    "id": 1423,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1423",
    "source": {
      "sourceString": "2024 US Open Silver",
      "year": 2024,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Painting Fence Posts",
      "place": 2,
      "name": "Painting Fence Posts"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "5 4\n3 1\n1 5\n3 5\n1 1\n2 1 1 5\n1 5 3 4\n3 1 3 5\n2 1 2 1\n3 2 3 3\n",
        "output": "1\n2\n2\n1\n"
      },
      {
        "input": "2 8\n1 1\n1 2\n0 2\n0 3\n0 0\n0 1\n2 3\n2 0\n1 1 2 1\n1 0 1 3\n",
        "output": "1\n0\n0\n0\n1\n1\n1\n2\n"
      },
      {
        "input": "1 12\n0 0\n2 0\n2 1\n1 1\n1 2\n3 2\n3 3\n1 3\n1 4\n2 4\n2 5\n0 5\n2 2 0 2\n",
        "output": "1\n1\n1\n1\n1\n0\n0\n0\n0\n0\n0\n0\n"
      }
    ]
  },
  "1424": {
    "id": 1424,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1424",
    "source": {
      "sourceString": "2024 US Open Silver",
      "year": 2024,
      "contest": "US Open",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. The 'Winning' Gene",
      "place": 3,
      "name": "The 'Winning' Gene"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "8\nAGTCAACG\n",
        "output": "11\n10\n5\n4\n2\n2\n1\n1\n"
      }
    ]
  },
  "1425": {
    "id": 1425,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1425",
    "source": {
      "sourceString": "2024 US Open Gold",
      "year": 2024,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cowreography",
      "place": 1,
      "name": "Cowreography"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 1\n0111\n1110\n",
        "output": "3\n"
      },
      {
        "input": "5 2\n11000\n00011\n",
        "output": "3\n"
      },
      {
        "input": "5 4\n11000\n00011\n",
        "output": "2\n"
      }
    ]
  },
  "1426": {
    "id": 1426,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1426",
    "source": {
      "sourceString": "2024 US Open Gold",
      "year": 2024,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Grass Segments",
      "place": 2,
      "name": "Grass Segments"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n3 6 3\n4 7 2\n",
        "output": "0\n1\n"
      },
      {
        "input": "4\n3 6 1\n2 5 1\n4 10 1\n1 4 1\n",
        "output": "3\n3\n2\n2\n"
      },
      {
        "input": "5\n8 10 2\n4 9 2\n3 7 4\n5 7 1\n2 7 1\n",
        "output": "0\n3\n1\n3\n3\n"
      }
    ]
  },
  "1427": {
    "id": 1427,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1427",
    "source": {
      "sourceString": "2024 US Open Gold",
      "year": 2024,
      "contest": "US Open",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Smaller Averages",
      "place": 3,
      "name": "Smaller Averages"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n1 2\n2 2\n",
        "output": "2\n"
      },
      {
        "input": "3\n1 3 2\n2 2 2\n",
        "output": "3\n"
      },
      {
        "input": "5\n2 5 1 3 2\n2 1 5 2 2\n",
        "output": "1\n"
      },
      {
        "input": "7\n3 5 2 3 4 4 1\n5 3 5 3 3 4 1\n",
        "output": "140\n"
      }
    ]
  },
  "1428": {
    "id": 1428,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1428",
    "source": {
      "sourceString": "2024 US Open Platinum",
      "year": 2024,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Identity Theft",
      "place": 1,
      "name": "Identity Theft"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n1\n1\n1\n",
        "output": "5\n"
      },
      {
        "input": "3\n1\n11\n111\n",
        "output": "2\n"
      },
      {
        "input": "3\n1\n1\n11\n",
        "output": "4\n"
      },
      {
        "input": "5\n0\n01\n0011\n010\n01\n",
        "output": "6\n"
      },
      {
        "input": "14\n0\n1\n1\n0\n1\n0\n1\n1\n1\n1\n1\n0\n0\n1\n",
        "output": "41\n"
      }
    ]
  },
  "1429": {
    "id": 1429,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1429",
    "source": {
      "sourceString": "2024 US Open Platinum",
      "year": 2024,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Splitting Haybales",
      "place": 2,
      "name": "Splitting Haybales"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n3 1\n15\n1 1 -2\n1 1 -1\n1 1 0\n1 1 1\n1 1 2\n1 2 -2\n1 2 -1\n1 2 0\n1 2 1\n1 2 2\n2 2 -2\n2 2 -1\n2 2 0\n2 2 1\n2 2 2\n",
        "output": "1\n2\n3\n-2\n-1\n0\n1\n2\n-1\n0\n-1\n0\n1\n0\n1\n"
      },
      {
        "input": "5\n4 4 3 1 1\n7\n1 1 20\n1 2 20\n1 5 20\n1 1 0\n1 5 0\n1 4 0\n3 5 2\n",
        "output": "16\n12\n7\n4\n1\n2\n1\n"
      }
    ]
  },
  "1430": {
    "id": 1430,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1430",
    "source": {
      "sourceString": "2024 US Open Platinum",
      "year": 2024,
      "contest": "US Open",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Activating Robots",
      "place": 3,
      "name": "Activating Robots"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "10 2 1 2\n6\n",
        "output": "22\n"
      },
      {
        "input": "10 2 1 2\n7\n",
        "output": "4\n"
      },
      {
        "input": "32 4 5 2\n0 23 12 5 11\n",
        "output": "48\n"
      },
      {
        "input": "24 3 1 2\n16\n",
        "output": "48\n"
      }
    ]
  },
  "1443": {
    "id": 1443,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1443",
    "source": {
      "sourceString": "2024 December Bronze",
      "year": 2024,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Roundabout Rounding",
      "place": 1,
      "name": "Roundabout Rounding"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4\n1\n100\n4567\n3366\n",
        "output": "0\n5\n183\n60\n"
      }
    ]
  },
  "1444": {
    "id": 1444,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1444",
    "source": {
      "sourceString": "2024 December Bronze",
      "year": 2024,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Farmer John's Cheese Block",
      "place": 2,
      "name": "Farmer John's Cheese Block"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2 5\n0 0 0\n1 1 1\n0 1 0\n1 0 0\n1 1 0\n",
        "output": "0\n0\n1\n2\n5\n"
      }
    ]
  },
  "1445": {
    "id": 1445,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1445",
    "source": {
      "sourceString": "2024 December Bronze",
      "year": 2024,
      "contest": "December",
      "division": "Bronze"
    },
    "submittable": true,
    "title": {
      "titleString": "3. It's Mooin' Time",
      "place": 3,
      "name": "It's Mooin' Time"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "10 2\nzzmoozzmoo\n",
        "output": "1\nmoo\n"
      },
      {
        "input": "17 2\nmomoobaaaaaqqqcqq\n",
        "output": "3\naqq\nbaa\ncqq\n"
      },
      {
        "input": "3 1\nooo\n",
        "output": "25\naoo\nboo\ncoo\ndoo\neoo\nfoo\ngoo\nhoo\nioo\njoo\nkoo\nloo\nmoo\nnoo\npoo\nqoo\nroo\nsoo\ntoo\nuoo\nvoo\nwoo\nxoo\nyoo\nzoo\n"
      }
    ]
  },
  "1446": {
    "id": 1446,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1446",
    "source": {
      "sourceString": "2024 December Silver",
      "year": 2024,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cake Game",
      "place": 1,
      "name": "Cake Game"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "2\n4\n40 30 20 10\n4\n10 20 30 40\n",
        "output": "60 40\n60 40\n"
      }
    ]
  },
  "1447": {
    "id": 1447,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1447",
    "source": {
      "sourceString": "2024 December Silver",
      "year": 2024,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Deforestation",
      "place": 2,
      "name": "Deforestation"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n7 1\n8 4 10 1 2 6 7\n2 9 3\n7 2\n8 4 10 1 2 6 7\n2 9 3\n1 10 1\n7 2\n8 4 10 1 2 6 7\n2 9 3\n1 10 4\n",
        "output": "4\n4\n3\n"
      }
    ]
  },
  "1448": {
    "id": 1448,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1448",
    "source": {
      "sourceString": "2024 December Silver",
      "year": 2024,
      "contest": "December",
      "division": "Silver"
    },
    "submittable": true,
    "title": {
      "titleString": "3. 2D Conveyor Belt",
      "place": 3,
      "name": "2D Conveyor Belt"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 5\n1 1 R\n3 3 L\n3 2 D\n1 2 L\n2 1 U\n",
        "output": "0\n0\n0\n2\n3\n"
      },
      {
        "input": "3 8\n1 1 R\n1 2 L\n1 3 D\n2 3 U\n3 3 L\n3 2 R\n3 1 U\n2 1 D\n",
        "output": "0\n2\n2\n4\n4\n6\n6\n9\n"
      },
      {
        "input": "4 13\n2 2 R\n2 3 R\n2 4 D\n3 4 D\n4 4 L\n4 3 L\n4 2 U\n3 1 D\n4 1 R\n2 1 L\n1 1 D\n1 4 L\n1 3 D\n",
        "output": "0\n0\n0\n0\n0\n0\n0\n0\n11\n11\n11\n11\n13\n"
      }
    ]
  },
  "1449": {
    "id": 1449,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1449",
    "source": {
      "sourceString": "2024 December Gold",
      "year": 2024,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "1. Cowdependence",
      "place": 1,
      "name": "Cowdependence"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "9\n1 1 1 9 2 1 2 1 1\n",
        "output": "7\n5\n4\n4\n4\n4\n4\n3\n3\n"
      }
    ]
  },
  "1450": {
    "id": 1450,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1450",
    "source": {
      "sourceString": "2024 December Gold",
      "year": 2024,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "2. Interstellar Intervals",
      "place": 2,
      "name": "Interstellar Intervals"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "6\nRXXXXB\n",
        "output": "5\n"
      },
      {
        "input": "6\nXXRBXX\n",
        "output": "6\n"
      },
      {
        "input": "12\nXBXXXXRXRBXX\n",
        "output": "18\n"
      }
    ]
  },
  "1451": {
    "id": 1451,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1451",
    "source": {
      "sourceString": "2024 December Gold",
      "year": 2024,
      "contest": "December",
      "division": "Gold"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Job Completion",
      "place": 3,
      "name": "Job Completion"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3\n2\n1 4\n1 2\n2\n2 3\n1 2\n3\n1 4\n2 3\n1 2\n",
        "output": "1\n2\n2\n"
      }
    ]
  },
  "1452": {
    "id": 1452,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1452",
    "source": {
      "sourceString": "2024 December Platinum",
      "year": 2024,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "1. All Pairs Similarity",
      "place": 1,
      "name": "All Pairs Similarity"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "4 2\n1\n1\n2\n3\n",
        "output": "500000006\n500000006\n500000005\n500000006\n"
      }
    ]
  },
  "1453": {
    "id": 1453,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1453",
    "source": {
      "sourceString": "2024 December Platinum",
      "year": 2024,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "2. It's Mooin' Time",
      "place": 2,
      "name": "It's Mooin' Time"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "1 4\nMOOO\n10 20 30 40\n",
        "output": "0\n20\n50\n90\n"
      },
      {
        "input": "3 4\nOOOO\n50 40 30 20\n",
        "output": "40\n"
      },
      {
        "input": "2 20\nOOOMOMOOOMOOOMMMOMOO\n44743602 39649528 94028117 50811780 97338107 30426846 94909807 22669835 78498782 18004278 16633124 24711234 90542888 88490759 12851185 74589289 54413775 21184626 97688928 10497142\n",
        "output": "0\n0\n0\n0\n0\n12851185\n35521020\n60232254\n99881782\n952304708\n"
      },
      {
        "input": "3 20\nOOOMOMOOOMOOOMMMOMOO\n44743602 39649528 94028117 50811780 97338107 30426846 94909807 22669835 78498782 18004278 16633124 24711234 90542888 88490759 12851185 74589289 54413775 21184626 97688928 10497142\n",
        "output": "0\n0\n0\n44743602\n119332891\n207066974\n"
      }
    ]
  },
  "1454": {
    "id": 1454,
    "url": "https://usaco.org/index.php?page=viewproblem2&cpid=1454",
    "source": {
      "sourceString": "2024 December Platinum",
      "year": 2024,
      "contest": "December",
      "division": "Platinum"
    },
    "submittable": true,
    "title": {
      "titleString": "3. Maximize Minimum Difference",
      "place": 3,
      "name": "Maximize Minimum Difference"
    },
    "input": "stdin",
    "output": "stdout",
    "samples": [
      {
        "input": "3 4\n0\n1\n1 1\n2\n0 2\n2 3\n",
        "output": "2\n0\n1\n"
      },
      {
        "input": "9 11\n2\n0 5\n6 9\n3\n0 5\n6 9\n1 0\n4\n0 5\n6 9\n1 0\n4 7\n5\n0 5\n6 9\n1 0\n4 7\n2 6\n6\n0 5\n6 9\n1 0\n4 7\n2 6\n9 3\n7\n0 5\n6 9\n1 0\n4 7\n2 6\n9 3\n5 2\n8\n0 5\n6 9\n1 0\n4 7\n2 6\n9 3\n5 2\n7 4\n9\n0 5\n6 9\n1 0\n4 7\n2 6\n9 3\n5 2\n7 4\n3 1\n10\n0 5\n6 9\n1 0\n4 7\n2 6\n9 3\n5 2\n7 4\n3 1\n8 10\n",
        "output": "6\n6\n1\n1\n1\n1\n1\n1\n1\n"
      },
      {
        "input": "10 11\n0\n1\n3 8\n2\n3 8\n5 7\n3\n3 8\n5 7\n4 2\n4\n3 8\n5 7\n4 2\n10 6\n5\n3 8\n5 7\n4 2\n10 6\n8 10\n6\n3 8\n5 7\n4 2\n10 6\n8 10\n1 9\n7\n3 8\n5 7\n4 2\n10 6\n8 10\n1 9\n7 5\n8\n3 8\n5 7\n4 2\n10 6\n8 10\n1 9\n7 5\n2 3\n9\n3 8\n5 7\n4 2\n10 6\n8 10\n1 9\n7 5\n2 3\n6 0\n",
        "output": "160\n20\n8\n7\n2\n1\n1\n1\n1\n1\n"
      },
      {
        "input": "5 987\n3\n654 321\n543 210\n432 106\n2\n654 321\n543 210\n1\n654 321\n1\n0 493\n0\n",
        "output": "0\n538184948\n693625420\n932738155\n251798971\n"
      }
    ]
  }
}