using System;

namespace No305{
    public class Program{
        public static void Main(string[] args){
            var res = new int[10];

            Func<int> output = () =>{
                Console.WriteLine(string.Join("", res));
                return int.Parse(Console.ReadLine().Split(' ')[0]);
            };

            for(var i = 0; i < 10; i++){
                var x = output(); if(x == 10) return;

                for(var j = 1; j < 10; j++){
                    res[i] = j;
                    var y = output(); if(y == 10) return;

                    if(y > x){
                        break;
                    }
                    if(y < x){
                        res[i] = 0;
                        break;
                    }
                }
            }
        }
    }
}