#include<iostream>
int namespace std;
int n;
int a;
int b=0;
int shuru;
int main()
{
    cin>>n;
	while(true){
		cin>>shuru;
		for(int i=1;i<=shuru;i++){
			cout<<b;
			a++;
			if(a%n==0) cout<<endl;
		}
	    b=b==0?1:0;
	    if(a==n*n) break;
	}
	return 0;
}