#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

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