On a N * N grid, we place some 1 * 1 * 1 cubes.
Each value v = grid[i][j] represents a tower of v cubes placed on top of grid cell (i, j).
Return the total surface area of the resulting shapes.
Example
No.1
Input: [[2]]
Output: 10
No.2
Input: [[1,2],[3,4]]
Output: 34
No.3
Input: [[1,0],[0,2]]
Output: 16
No.4
Input: [[1,1,1],[1,0,1],[1,1,1]]
Output: 32
No.5
Input: [[2,2,2],[2,1,2],[2,2,2]]
Output: 46
Note
- 1 <= N <= 50
- 0 <= grid[i][j] <= 50
Code
1 | public int surfaceArea(int[][] grid) { |