Input: grid = [[1,0,2],[1,0,2]]
\n\nOutput: 0
\n\nExplanation:
\n\n![\"\"](\"https://assets.leetcode.com/uploads/2024/04/15/examplechanged.png\")
All the cells in the matrix already satisfy the properties.
\nYou are given a 2D matrix grid of size m x n. In one operation, you can change the value of any cell to any non-negative number. You need to perform some operations such that each cell grid[i][j] is:
grid[i][j] == grid[i + 1][j] (if it exists).grid[i][j] != grid[i][j + 1] (if it exists).Return the minimum number of operations needed.
\n\n\n
Example 1:
\n\nInput: grid = [[1,0,2],[1,0,2]]
\n\nOutput: 0
\n\nExplanation:
\n\n
All the cells in the matrix already satisfy the properties.
\nExample 2:
\n\nInput: grid = [[1,1,1],[0,0,0]]
\n\nOutput: 3
\n\nExplanation:
\n\n![\"\"](\"https://assets.leetcode.com/uploads/2024/03/27/example21.png\")
The matrix becomes [[1,0,1],[1,0,1]] which satisfies the properties, by doing these 3 operations:
grid[1][0] to 1.grid[0][1] to 0.grid[1][2] to 1.Example 3:
\n\nInput: grid = [[1],[2],[3]]
\n\nOutput: 2
\n\nExplanation:
\n\n![\"\"](\"https://assets.leetcode.com/uploads/2024/03/31/changed.png\")
There is a single column. We can change the value to 1 in each cell using 2 operations.
\n\n
Constraints:
\n\n1 <= n, m <= 10000 <= grid[i][j] <= 9Compiled with clang 17 using the latest C++ 20 standard, and libstdc++ provided by GCC 11.
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