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

#define int long long

void testcase() {
  int a, b, temp;

  cout << "? 0" << endl;

  cin >> temp;
  b = temp;

  cout << "? 1" << endl;

  cin >> temp;
  a = temp - b;

  cout << "! " << a << ' ' << b << endl;

  return;
}

int32_t main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  testcase();
  return 0;
}