#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int INF=0x3f3f3f3f;
const ll LLINF=0x3f3f3f3f3f3f3f3fLL;
const int MAX=2e5+10;
int main()
{
	int a,b;
	cout<<"? 0"<<endl;
	cin>>b;
	cout<<"? 1"<<endl;
	cin>>a;
	a-=b;
	cout<<"! "<<a<<" "<<b<<endl;
	return 0;
}