#include <bits/stdc++.h>
using namespace std;
int main(){
  cout << "? " << 100 << endl;
  int r1;
  cin >> r1;
  if (r1 == 99){
    cout << "! " << 99 << ' ' << 100 << endl;
  } else {
    cout << "? " << 100 - r1 - 1 << endl;
    int r2;
    cin >> r2;
    int B = r2 + 1;
    int A = (r1 - 100) % B;
    if (A < 0){
      A += B;
    }
    cout << "! " << A << ' ' << B << endl;
  }
}