#include<bits/stdc++.h>
#define task ""
#define fi first 
#define sc second
using namespace std;
using ll = long long;

int main() {
    cout << "query 0" << endl;

    int sum_dig;
    cin >> sum_dig;

    ll ans = 0;

    for (int i = 1; i <= 18; ++i) {
        int lo = 0, hi = 10;
        while (hi - lo > 1) {
            int mid = (lo + hi)/2;

            cout << "query " << mid * powl(10, i - 1) << endl;
            
            int sum;
            cin >> sum;

            if (sum_dig < sum)
                lo = mid;
            else
                hi = mid;
        }

        ans = (ans + (10 - hi) * powl(10, i - 1));
    }

    cout << "answer " << ans << endl;
}