#include <bits/stdc++.h>
using namespace std;
int main()
{
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    // cout<<"query 0"; fflush(stdout);
    // long long x; cin>>x;
    long long l=0,r=1000000000000000000-1;
    while(l<=r){
        long long mid=(l+r)/2;
        cout<<"query "<<mid<<"\n";
        long long x; cin>>x;
        if(x<(mid%9)+1)r=mid-1;
        else l=mid+1;
    }
    cout<<"answer "<<l<<"\n";
}