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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    cout << "? 0" << endl;
    long long x; cin >> x;
    cout << "? 1" << endl;
    long long y; cin >> y;
    cout << "! " << y-x << " " << x << endl;
}