#include <bits/stdc++.h>
using namespace std;
//enum Status {OK, WRONG_ANSWER, WRONG_INTERACTION, Q_LIMIT_EXCEEDED, Q_LIMIT_PARTIAL};
ofstream fout ("cbinteractiv.out");
int main()
{
    ios_base::sync_with_stdio(false);
    int n,i,j;
    fout<<913611539<<'\n'<<0<<endl;
    cout<<"? 1\n"; /// la deruta
    cout.flush();
    cin>>n;
    fout.close();
}