#include<bits/stdc++.h>
using namespace std;
int main(void){
int n;
cin>>n;
int ans=0,sum=0;
int b,sum1;
while(sum1<n*n){
	cin>>b;
	ans++;
	sum1+=b;
	if(ans%2==0){
		    for(int i=0;i<b;i++){	
				if(sum%n==0){
				cout<<endl;
				}
				sum++;
				cout<<"1";
			}
			}
			else {
				for(int i=0;i<b;i++){
					if(sum%n==0){
						cout<<endl;
					}
					sum++;
					cout<<"0";
				}
			}
	    }
	    cout<<endl;
	}