#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll=long long;

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