typedef long long ll;
typedef long double ld;
#include <bits/stdc++.h>
using namespace std;
#define int long long

signed main(){
    std::cout << "? 100" << std::endl;
    ll x1;
    std::cin >> x1;
    if(x1==99){
        std::cout << "! 99 100" << std::endl;
        return 0;
    }
    std::cout << "? "<<100-x1-1<< std::endl;
    ll x2;
    std::cin >> x2;
    ll b = x2+1;
    for (int i = 0; i < b; i++) {
        if((i+100)%b==x1&&(i+100-x1-1)%b==x2){
            std::cout << "! "<<i<<" "<<b << std::endl;
            return 0;
        }
    }
}