#include<iostream>
#include<cstdio>
using namespace std;

int main(){
	int n,a[205][205],sum = 0,s0,s1,hang = 1,lie = 1;
	cin>>n;
	while(sum != n * n){
		cin>>s0>>s1;
		for(int i = 1;i <= s0;i++){
			a[hang][lie] = 0;
			if(lie == n){
				hang++;
				lie = 1;
			}
			else{
				lie++;
			}
		}
		for(int i = 1;i <= s1;i++){
			a[hang][lie] = 1;
			if(lie == n){
				hang++;
				lie = 1;
			}
			else{
				lie++;
			}
		}
		sum += s0 + s1;
	}
	for(int i = 1;i <= n;i++){
		for(int j = 1;j <= n;j++){
			cout<<a[i][j];
		}
		cout<<endl;
	}
	return 0;
}