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


int main() {

  cout << "? 100" << endl;
  int a; cin >> a;
  if (a == 99) {
    cout << "! " << 99 << " " << 100 << endl;
    exit(0);
  }
  cout << "? " << 100 - a - 1 << endl;
  int b; cin >> b;
  int B = b + 1;  

  for (int A = 0; A < B; A++) {
    if (!((A + 100) % B == a)) continue;
    if (!((A + 100 - a - 1) % B == b)) continue;
    cout << "! " << A << " " << B << endl;
    exit(0);
  }
  exit(1);
  

}