2025-07-31 17:16:38 +0300 MSK

class Solution:
    def isToeplitzMatrix(self, matrix: List[List[int]]) -> bool:
        for i in range(1, len(matrix)):
            for j in range(1, len(matrix[0])):
                if matrix[i-1][j-1] != matrix[i][j]:
                    return False
        return True