import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        System.out.println("? 0");  
        Scanner scanner = new Scanner(System.in);
        int f0 = scanner.nextInt(); // 整数を受け取る
        System.out.println("? 1");  // 改行なしの出力
        scanner = new Scanner(System.in);
        int f1 = scanner.nextInt(); // 整数を受け取る
        System.out.println("! " + (f1-f0) + " " + f0);
    }
}