using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var a = ReadLine();
        WriteLine($"? {a}{a}");
        while (true)
        {
            var s = ReadLine();
            if (s[0] == '!') break;
            WriteLine($"? {s[3]}{a}");
        }
    }
}