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

using i64 = long long;

int main() {
    cin.tie(nullptr)->sync_with_stdio(false);

    auto solve = [&]() {
        auto ask = [&](int x) {
            cout << "? " << x << endl;
            int res;
            cin >> res;
            return res;
        };

        int b = ask(0);
        int a = ask(1) - b;

        cout << "! " << a << ' ' << b << endl;
    };
    
    solve();
    
    return 0;
}