#include <bits/stdc++.h>

using std::cin;
using std::cout;

int main() {
	int n;
	cin >> n;
	
	int x = 0;
	for (int i = 0; i < n; ++i) {
		for (int j = 0; j < n; ++j) {
			cout << (x++);
		}
		puts("");
	}
	
	return 0;
}