class Solution {
public:
    bool isToeplitzMatrix(vector<vector<int>>& matrix) {

        for(int i=0 ; i < matrix.size()-1; i++)
            for(int j = 0; j < matrix[i].size()-1; j++)
                if(matrix[i][j] != matrix[i+1] [j+1])
                    return false;

        return true;
    }
};