comefrom: <doocs>1992.Find All Groups of Farmland_1.py
code: def findFarmland( land: List[List[int]]) -> List[List[int]]:
      m, n = len(land), len(land[0])
      ans = []
      for i in range(m):
          for j in range(n):
              if (
                  land[i][j] == 0
                  or (j > 0 and land[i][j - 1] == 1)
                  or (i > 0 and land[i - 1][j] == 1)
              ):
                  continue
              x, y = i, j
              while x + 1 < m and land[x + 1][j] == 1:
                  x += 1
              while y + 1 < n and land[x][y + 1] == 1:
                  y += 1
              ans.append([i, j, x, y])
      return ans
masked: def sample_funcname ( var_0 : List [ List [ int ] ] ) -> List [ List [ int ] ] :
      var_4 , var_6 = len ( var_0 ) , len ( var_0 [ 0 ] )
      var_7 = [ ]
      for var_9 in range ( var_4 ) :
          for var_10 in range ( var_6 ) :
              if ( var_0 [ var_9 ] [ var_10 ] == 0 or ( var_10 > 0 and var_0 [ var_9 ] [ var_10 - 1 ] == 1 ) or ( var_9 > 0 and var_0 [ var_9 - 1 ] [ var_10 ] == 1 ) ) :
                  continue
              var_12 , var_13 = var_9 , var_10
              while var_12 + 1 < var_4 and var_0 [ var_12 + 1 ] [ var_10 ] == 1 :
                  var_12 += 1
              while var_13 + 1 < var_6 and var_0 [ var_12 ] [ var_13 + 1 ] == 1 :
                  var_13 += 1
              var_7.append ( [ var_9 , var_10 , var_12 , var_13 ] )
      return var_7
  