using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		
		char[] ca="0000000000".ToCharArray();
		Console.WriteLine(new String(ca));
		var ss=rsa();
		int now=int.Parse(ss[0]);
		if(now==10)return;
		for(int i=0;i<10;i++){
			for(char c='1';c<='9';c++){
				ca[i]=c;
				Console.WriteLine(new String(ca));
				ss=rsa();
				int nxt=int.Parse(ss[0]);
				if(nxt>now){
					now=nxt;
					if(now==10)return;
					break;
				}
				ca[i]='0';
			}
		}
		
		
	}

	public Sol(){
	}




	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(){return Console.ReadLine().Split(' ');}
	static int[] ria(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>int.Parse(e));}
	static long[] rla(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>long.Parse(e));}
	static double[] rda(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>double.Parse(e));}
}