#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.hpp"
#else
#define debug(...) 1
#endif

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    auto Ask = [&] (int x) {
        cout << "? " << x << endl;
        int ret;
        cin >> ret;
        return ret;
    };
    int y1 = Ask(100);
    vector<pair<int, int>> can;
    for (int a = 0; a < 100; a++) {
        for (int b = a + 1; b <= 100; b++) {
            if ((a + 100) % b == y1) {
                can.push_back(make_pair(a, b));
            }
        }
    }
    for (int i = 1; i <= 100; i++) {
        vector<int> z;
        for (auto [u, v] : can) {
            z.push_back((u + i) % v);
        }
        if (can.size() == z.size()) {
            int y2 = Ask(i);
            for (auto [u, v] : can) {
                if (y2 == (u + i) % v) {
                    cout << "! " << u << ' ' << v << endl;
                    return 0;
                }
            }
        }
    }
}