#include<bits/stdc++.h> using namespace std; int n, m; int main() { cin >> n >> m; int a[n][m]; for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { cin >> a[i][j]; } } for (int j = m; j >= 0; j--) { for (int i = n; i >= 0; i--) { cout << a[i][j]; } } return 0; }