#include <bits/stdc++.h>

using namespace std;

int main() {
    int N = 0;
    cin >> N;

    int a;
    int count = 0;
    int cishu = 0;
    while (1) {
        cin >> a;
        cishu++;

        for (int i = 0; i < a; i++) {
            if (cishu % 2 == 0) {
                cout << "1";
            } else {
                cout << "0";
            }
            count++;
            if (count % N == 0) {
                cout << endl;
            }
        }

        if (count == N * N) {
            break;
        }
    }
    return 0;
}