#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define ll long long
#define rep(i,n) for (int i = 0; i < (n); i++)
#define coutf(f) cout << fixed << setprecision(f)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()

int main() {
	int v, d;
	cin >> v >> d;
	rep(i, v) {
		rep(j, v) {
			if (i == j) cout << 0;
			else cout << 1;
		}
		cout << endl;
	}
	return 0;
}