Leetcode 919 Solution

This article provides solution to leetcode question 919 (projection-area-of-3d-shapes)

https://leetcode.com/problems/projection-area-of-3d-shapes

Solution

class Solution: def projectionArea(self, grid: List[List[int]]) -> int: n = len(grid)
im = collections.defaultdict(int) jm = collections.defaultdict(int)
ans = 0 for i, j in itertools.product(range(n), range(n)): if grid[i][j] == 0: continue
im[i] = max(im[i], grid[i][j]) jm[j] = max(jm[j], grid[i][j]) ans += 1
return ans + sum(im.values()) + sum(jm.values())