Suppose we have a number n representing the length of an n x n board. We have to delete all cells that are diagonal to one of the four corners and return the number of empty cells.
So, if the input is like n = 4,
Then the output will be 8.
To solve this, we will follow this formula −
Let us see the following implementation to get better understanding −
class Solution: def solve(self, n): return n*n - 2 * n + (n%2) ob = Solution() print(ob.solve(4))