#include<iostream>
#include<cassert>
using namespace std;
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	cout<<"? 0"<<endl;
	int X;cin>>X;
	cout<<"? 1"<<endl;
	int Y;cin>>Y;
	cout<<"! "<<Y-X<<" "<<X<<endl;
}