#include<bits/stdc++.h>
#include <math.h>
#include <algorithm>
#include <iostream>
#include <vector>
#include <atcoder/all>
#include <atcoder/dsu>
#include <atcoder/segtree>
#include <atcoder/lazysegtree>
#include <atcoder/modint>
#include <atcoder/scc>
#include <chrono>
#include <random>
#include <cassert>
#ifndef templete
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()
 
//#include<boost/multiprecision/cpp_int.hpp>
//using namespace boost::multiprecision;
using namespace std;
using namespace atcoder;
//using atmint = modint998244353;
using atmint = modint;
using Graph = vector<vector<int>>;
using P = pair<long long,long long>;
//#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60;
template<class T>bool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; }
 
//---------------------------------------------------------------------------------------------------

#endif // templete
//---------------------------------------------------------------------------------------------------
void _main() {   
    ll x1 = 100;
    cout << "? " << x1 << endl;
    ll ans1;
    cin >> ans1;
    ll x2 = x1;
    ll v = ans1;
    while(v != -1){
        x2--;
        v--;
    }
    cout << "? " << x2 << endl;
    ll ans2;
    cin >> ans2;
    rep(a,0,100)rep(b,a+1,101){
        if((a+x1)%b == ans1 && (a+x2)%b == ans2){
            cout << "! " << a << " " << b << endl;
            return;
        }
    }
    while(1){
        
    }
}