#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, s, e) for (int i = (int)(s); i < (int)(e); ++i)
#define all(a) (a).begin(),(a).end()

int main() {
    int a, b, t;
    cout << "? 0\n";
    cin >> b;
    cout << "? 1\n";
    cin >> t;
    a = t - b;
    cout << "! " << a << ' ' << b << '\n';
}