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

namespace yukicodeX {
    public class ProgramX {
        static int lastNumber = 0;
        public static string GetNumber() {
            return string.Format( "{0:000}", lastNumber++ );
        }
        public static void Solver(System.IO.TextReader reader) {
            Console.WriteLine( GetNumber() );
            Console.Out.Flush();
            while (reader.ReadLine() != "unlocked") {
                Console.WriteLine( GetNumber() );
                Console.Out.Flush();
            }
        }

        private static void Main() {
            Solver( Console.In );
        }
    }
}