comefrom: <doocs>0073.Set Matrix Zeroes_1.py
code: def setZeroes( matrix: List[List[int]]) -> None:
      m, n = len(matrix), len(matrix[0])
      zero_rows = [False] * m
      zero_cols = [False] * n
      for i in range(m):
          for j in range(n):
              if matrix[i][j] == 0:
                  zero_rows[i] = zero_cols[j] = True
      for i in range(m):
          for j in range(n):
              if zero_rows[i] or zero_cols[j]:
                  matrix[i][j] = 0
masked: def sample_funcname ( var_0 : List [ List [ int ] ] ) -> None :
      var_5 , var_7 = len ( var_0 ) , len ( var_0 [ 0 ] )
      var_9 = [ False ] * var_5
      var_10 = [ False ] * var_7
      for var_12 in range ( var_5 ) :
          for var_13 in range ( var_7 ) :
              if var_0 [ var_12 ] [ var_13 ] == 0 :
                  var_9 [ var_12 ] = var_10 [ var_13 ] = True
      for var_12 in range ( var_5 ) :
          for var_13 in range ( var_7 ) :
              if var_9 [ var_12 ] or var_10 [ var_13 ] :
                  var_0 [ var_12 ] [ var_13 ] = 0
  