comefrom: <doocs>1351.Count Negative Numbers in a Sorted Matrix_1.py
code: def countNegatives( grid: List[List[int]]) -> int:
      m, n = len(grid), len(grid[0])
      i, j = m - 1, 0
      ans = 0
      while i >= 0 and j < n:
          if grid[i][j] < 0:
              ans += n - j
              i -= 1
          else:
              j += 1
      return ans
masked: def sample_funcname ( var_0 : List [ List [ int ] ] ) -> int :
      var_4 , var_6 = len ( var_0 ) , len ( var_0 [ 0 ] )
      var_8 , var_9 = var_4 - 1 , 0
      var_10 = 0
      while var_8 >= 0 and var_9 < var_6 :
          if var_0 [ var_8 ] [ var_9 ] < 0 :
              var_10 += var_6 - var_9
              var_8 -= 1
          else :
              var_9 += 1
      return var_10
  