#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, b) for (int i = a; i < b; i++)
#define pb push_back
#define all(x) (x).begin(), (x).end()
typedef long long ll;
using vi = vector<int>;
using vl = vector<ll>;
int find_best(int n) {
int lo = 0, hi = n;
while (lo <= hi) {
int mid = lo + (hi - lo) / 2;
vi res = ask(mid);
// cout << "lo = " << lo << " hi = " << hi << " mid = " << mid << " r1 = " << res[0] << " r2 = " << res[1] << "\n";
if (res[0] + res[1] == 0) {
return mid;
}
if (res[0] == 1) {
hi = mid;
} else {
lo = mid + 1;
}
}
return lo;
}
