using System;

namespace A_GuesstheFunction
{
    internal class Program
    {
        static void Main(string[] args) {
            Console.WriteLine("? 100");
            int y1 = int.Parse(Console.ReadLine());
            if((100 - y1 - 1) == 0) {
                //99が返された場合a = 99、b = 100
                Console.WriteLine(string.Format("! {0} {1}", 99, 100));
                return;
            }
            Console.WriteLine("? " + (100 - y1 - 1));
            int y2 = int.Parse(Console.ReadLine());
            int b = y2 + 1;
            int a = 0;
            for (int i = 1; i < 100; i++) {
                if (100 <= i * b + y1) {
                    a = i * b + y1 - 100;
                    break;
                }
            }
            Console.WriteLine(string.Format("! {0} {1}", a, b));
        }
    }
}