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

long long a, l, r, m, s, s1;

int main() {
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cout<<"query 0"<<endl;
    cin>>s;
    for(long long i=1; i<pow(10, 18); i*=10) {
        l=1;
        r=9;
        while(l!=r) {
            m=(l+r)/2;
            cout<<"query "<<a+i*m<<endl;
            cin>>s1;
            if(s1==s+m) l=m+1;
            else r=m;
        }
        a+=i*l;
        cout<<"query "<<a<<endl;
        cin>>s;
    }
    cout<<"answer "<<pow(10, 18)-a<<'\n';
}