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

class Magatro
{
    static void Main()
    {
        for(int i = 0; i <= 999; i++)
        {
            Console.WriteLine(string.Format("{0:D3}", i));
            if(Console.ReadLine()== "unlocked")
            {
                return;
            }
        }
            
    }

}