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

int main(){
  ll x1=2,x2=3;
  cout<<'?'<<" "<<x1<<endl;
  ll r1;
  cin>>r1;
  cout<<'?'<<" "<<x2<<endl;
  ll r2;
  cin>>r2;
  for(ll b=0;b<=100;b++){
    for(ll a=0;a<b;a++){
      if((x1+a-r1)%b==0&&(x2+a-r2)%b==0){
        if(0<=a&&a<b){
          cout<<a<<" "<<b<<endl;
          exit(0);
        }
      }
    }
  }
}