#include "prize.h" #include<bits/stdc++.h> using namespace std; #define all(a) (a).begin(), (a).end() #define vi vector<int> #define ff first #define ss second int find_best(int n) { set<int> used; int k = rand() % n; vi res = ask(k); used.insert(k); while(res != vi{0,0}){ while(used.count(k)) k = rand()%n; used.insert(k); res = ask(k); } return k; }