You are given a 0-indexed n x n grid where n is odd, and grid[r][c] is 0, 1, or 2.
We say that a cell belongs to the Letter Y if it belongs to one of the following:
\n\nThe Letter Y is written on the grid if and only if:
\n\nReturn the minimum number of operations needed to write the letter Y on the grid given that in one operation you can change the value at any cell to 0, 1, or 2.
\n
Example 1:
\n![\"\"](\"https://assets.leetcode.com/uploads/2024/01/22/y2.png\")
\n\nInput: grid = [[1,2,2],[1,1,0],[0,1,0]]\nOutput: 3\nExplanation: We can write Y on the grid by applying the changes highlighted in blue in the image above. After the operations, all cells that belong to Y, denoted in bold, have the same value of 1 while those that do not belong to Y are equal to 0.\nIt can be shown that 3 is the minimum number of operations needed to write Y on the grid.\n\n\n
Example 2:
\n![\"\"](\"https://assets.leetcode.com/uploads/2024/01/22/y3.png\")
\n\nInput: grid = [[0,1,0,1,0],[2,1,0,1,2],[2,2,2,0,1],[2,2,2,2,2],[2,1,2,2,2]]\nOutput: 12\nExplanation: We can write Y on the grid by applying the changes highlighted in blue in the image above. After the operations, all cells that belong to Y, denoted in bold, have the same value of 0 while those that do not belong to Y are equal to 2. \nIt can be shown that 12 is the minimum number of operations needed to write Y on the grid.\n\n
\n
Constraints:
\n\n3 <= n <= 49 n == grid.length == grid[i].length0 <= grid[i][j] <= 2n is odd.Compiled with clang 17 using the latest C++ 20 standard, and libstdc++ provided by GCC 11.
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