3239. Minimum Number of Flips to Make Binary Grid Palindromic I

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 either all rows palindromic or all columns palindromic. Example 1: Input: grid = [[1,0,0],[0,0,0],[0,0,1]] Output: 2 Ex