[{
  "input": [
   [1, 1, 1, 0],
    [1, 0, 1, 1],
    [1, 0, 1, 1],
    [1, 1, 1, 1]
  ],
  "walls": [
    [0, 0, 0, 0],
    [0, 0, 0, 0],
    [0, 0, 1, 0],
    [0, 0, 1, 0]
  ],
  "expected": [
    [1, 1, 1, 0],
     [1, 0, 1, 1],
     [1, 0, 10, 2],
     [1, 1, 10, 3]
  ],
  "limit": 10
},{
  "input": [
   [1, 1, 1, 0],
    [1, 0, 1, 1],
    [1, 0, 1, 1],
    [1, 1, 1, 1]
  ],
  "walls": [
    [0, 0, 0, 0],
    [0, 0, 0, 0],
    [0, 0, 1, 0],
    [0, 0, 1, 0]
  ],
  "expected": [
    [1, 1, 1, 0],
     [1, 0, 1, 1],
     [1, 0, 16, 2],
     [1, 1, 16, 3]
  ],
  "limit": 0
}]