3240. Minimum Number of Flips to Make Binary Grid Palindromic II
Description
You are given an m x n
binary matrix grid
.
A row or column is considered palindromic if its values read the same forward and backward.
You can flip any number of cells in grid
from 0
to 1
, or from 1
to 0
.
Return the minimum number of cells that need to be flipped to make all rows and columns palindromic, and the total number of 1
's in grid
divisible by 4
.
Example 1:
Example 2:
Example 3:
Constraints:
m == grid.length
n == grid[i].length
1 <= m * n <= 2 * 105
0 <= grid[i][j] <= 1
Solutions
Solution 1
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