#include<stdio.h>
int main() {
	int N;
	scanf("%d", &N);
	int A[200][200];
	int B[1000];
	int x = 0;
	int s = 0;
	int j = 0, i = 0;
	int a = 0, b = 0;
	do {
		scanf("%d", &B[x]);
		x++;
	} while (getchar() != '\n');
	while (s != x) {
		if (s % 2 == 0) {
			for (i = 0; i < B[s]; i++) {
				A[a][b] = 0;
				b++;
				if (b == N) {
					a++;
					b = 0;
				}
			}
			s++;
		}
		else {
			for (i=0; i < B[s]; i++) {
				A[a][b] = 1;
				b++;
				if (b == N) {
					a++;
					b = 0;
				}
			}
			s++;
		}
	}
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			printf("%d", A[i][j]);
		}
		printf("\n");
	}
}