#include <iostream>

using namespace std;

int main() {
	int n, k, offset=0;
	cin >> n >> k;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < offset; j++) {
			cout << "1";
		}
		for (int j = 0; j < n-k; j++) {
			if (offset + j < n) {
				cout << "0";
			}
		}
		for (int j = 0; j < k-offset; j++) {
			cout << "1";
		}
		cout << endl;
		offset++;
	}
	return 0;
}