#include<iostream>
using namespace std;

int main() {
	int n, s, count = 1;
	cin >> n;
	int f = -1;
	const char* a;
	for (int i = 0; i < n * n; i += s) {
		cin >> s;
		for (int j = 0; j < s; j++)
		{
			a = f==1 ? "1 " : "0 ";
			cout << a;
			if (count % n == 0)
				cout << endl;
			count++;
		}
		f *= -1;

	}

}