#ifdef LC
#include "pch.h"
#else
#include <bits/stdc++.h>
#include "grader.h"
#endif
using namespace std;
#define all(x) x.begin(), x.end()
#define x first
#define y second
#define mp make_pair
#define mt make_tuple
int kth(int i);
int cnt(int x);
void say_answer(int a);
mt19937 rnd;
void solve(int n) {
int q = 56;
set<int> ind;
set<int> was;
while (q > 0) {
int i = rnd() % n;
while (ind.count(i)) {
i = rnd() % n;
}
int v = kth(i);
--q;
if (was.count(v)) {
continue;
}
int c = cnt(v);
--q;
if (3 * c > n) {
say_answer(i);
return;
}
}
say_answer(-1);
}
#ifdef LC
const int N = 1000;
map<int, int> cn;
int v[N];
int kth(int i) {
return v[i];
}
int cnt(int x) {
return cn[x];
}
void say_answer(int x) {
cout << "answer " << x << endl;
}
signed main() {
assert(freopen("input.txt", "r", stdin));
ios::sync_with_stdio(0); cin.tie(0);
for (int i = 0; i < N; ++i) {
v[i] = rnd() % 4;
++cn[v[i]];
}
solve(N);
return 0;
}
#endif
