#nullable enable

#region
using System.Numerics;

var (_input, _iter) = (Array.Empty<string>(), 0);
T I<T>() where T : IParsable<T>
{
    while (_iter >= _input.Length) (_input, _iter) = (Console.ReadLine()!.Trim().Split(' '), 0);
    return T.Parse(_input[_iter++], null);
}
#endregion

var tz = new BigInteger[100];
tz[0] = 1;
for (var i = 1; i < 100; i++) tz[i] = tz[i - 1] * 10;
BigInteger ans = 0;
for (var i = 99; i >= 0; i--)
{
    var t = tz[i];
    for (var j = 0; j < 10; j++)
    {
        Console.WriteLine("? 1 " + t);
        if (I<string>() == ">") ans += t;
        else break;
    }
}
Console.WriteLine("! " + ans);