import pyutil as pyu
pyu.get_local_pyinfo()

print(pyu.ps2("python-dotenv"))

from typing import List

class Solution:
  def surfaceArea(self, grid: List[List[int]]) -> int:
    ans = 0

    for i in range(len(grid)):
      for j in range(len(grid)):
        if grid[i][j]:
          ans += grid[i][j] * 4 + 2
        if i > 0:
          ans -= min(grid[i][j], grid[i - 1][j]) * 2
        if j > 0:
          ans -= min(grid[i][j], grid[i][j - 1]) * 2

    return ans

new Solution().surfaceArea()