#include <bits/stdc++.h>

using namespace std;

void fast_io() {
	ios::sync_with_stdio(false);
	std::cin.tie(nullptr);
}

int main() {
	fast_io();
	cout << "? 0" << endl;
	int b;
	cin >> b;
	cout << "? 1" << endl;
	int a;
	cin >> a;
	a -= b;
	cout << "! " << a << " " << b << endl;
}