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

public class yukicoder
{
    public static void Main()
    {
        int cnt = 0;
        
        while(true)
        {
            Console.WriteLine(string.Format("{0:D3}", cnt));
            if(Console.ReadLine() == "unlocked")
                break;
                
            cnt ++;
        }
    }
}