$!b==b$?!

#include<iostream>
#include<cmath>
#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
#include<cmath>
#include<string>
#include<cstdlib>
#include<vector>
//#defide cfor(i,a,b) for(int i=(a);i<(b);i++)

using namespace std;
int main(){
	int n;
	cin>>n;
	
	int c;
	bool b=false;
	int l=0;
	while((c=getchar())!='\n'){
		int in=c-'0';
		//cout<<b;
		for(int i=0;i<in;i++){
			cout<<b;
			
			if(++l==n){
				cout<<endl;
				
				l=0;
			}
			
		}
		b=!b; 
		//cout<<b;
		
		
	}
	return 0;
} 

输出全是一