#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << "? 0" << endl;
    int b;
    cin >> b;
    cout << "? 1" << endl;
    int a;
    cin >> a;
    a -= b;
    cout << "! " << a << ' ' << b << endl;
}