Given an m×nm \times nm×n binary matrix, matrix, return the maximum number of rows where all values become identical after flipping any number of columns. Flipping a column means changing every 000 to 111 and every 111 to 000 in that column.
matrix
Constraints:
m==m ==m== matrix.length
matrix.length
n==n==n== matrix[i].length
matrix[i].length
1≤m,n≤50 ...