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

#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
typedef long long ll;

int const N = 10000000;

double likelyhood[N/2+1] = {0};
double logs[N+1] = {0};

// Logarithm of probability of getting result 'pos' when
// asking for 'a'  if the answer is 'r'.
double LP(int a, int r, bool pos){
    if(pos){
        double lp0 = LP(a, r, 0);
        if(lp0 < -20)return 0;
        return log(1 - exp(lp0));
    }
    return logs[N-r] - logs[N-r-a] - logs[N] + logs[N-a];
}

int ans = 100;

void test(int k){
    cout << "test " << k << "\n";
    fflush(stdout);
    bool result;
    cin >> result;
    double malog = -1e15;
    for(int temp = 100; temp <= N/2; temp = max(temp+1, int(temp * 1.1))){
        likelyhood[temp] += LP(k, temp, result);
        if(likelyhood[temp] > malog){
            malog = likelyhood[temp];
            ans = temp;
        }
    }
}

int main() {

    for(int c1 = 1; c1 <= N; c1++){
        logs[c1] = logs[c1-1] + log(double(c1));
    }

    for(int c1 = 0; c1 < 50; c1++){
        test(N/ans);
    }

    cout << "estimate " << ans << "\n";

    return 0;
}