// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
using ll = long long;
#define rep(i,n) for (ll i = 0; i < (n); ++i)
using vl = vector<ll>;
using vvl = vector<vl>;
using P = pair<ll,ll>;
#define pb push_back
#define int long long
#define double long double
#define INF (ll) 3e18
// Ctrl + Shift + B コンパイル
// Ctrl + C 中断
// ./m 実行


signed main(){
  int a = -1;
  int b = -1;
  int x1 = 100;
  int x2 = -1;
  int y1 = -1;
  int y2 = -1;
  cout << "? " << x1 << endl;
  cin >> y1;
  if (y1 == 99) {cout << "! " << 99 << " " << 100 << endl; return 0;}
  x2 = x1 - y1-1;
  cout << "? " << x2 << endl;
  cin >> y2;
  b = y2 + 1;
  a = b-1 - (x2 % b);
  cout << "! " << a << " " << b << endl;
}

// (A + x) % B = y
// (A + x) % B = y


// A = 13 B = 97
// x1 = 1000
// 1013 % 97 = 43
// x2 = 956
// (956+13) % 97 = 96

// a = b-1 - x2%b