#include<iostream>
using namespace std; 
int main(){
    int n=0,sum,count=0;
    cin>>n;
    sum=n*n;
    int arr[400];
    while(sum!=0){
        cin>>arr[count];
        sum-=arr[count];
        count++;
    }
    int i=0,num=0;
    while(count!=0){
        int cur=0,temp=arr[i];
        for(int j=cur;j<temp;j++){
            if(count%2!=0)cout<<"0";
            else cout<<"1";
            num++;
            if(num==n){
            	cout<<endl;
            	num=0;
			}
        }
        cur=temp;
        i++;
        count--;
    }
}