#include <stdio.h>
int main()
{
	int n;
	scanf("%d",&n);
	int a,b,c,d,i;
	b=0;
	i,c=1;
	for (i;b<=n*n;i++){
		a=0;
		scanf("%d",&a);
		b = b+a;
		c = 1-c;
		int j=1;
		for (j;j<=a;j++){
			d++;
			printf("%d",c);
			if (d%n == 0) 	printf("\n");
		}
	}
	
	 return 0; 
}