제출 #970421

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
970421		12345678	CONSUL (info1cup19_consul)	C++17	100 / 100	29 ms	856 KiB

consul

#include "grader.h"
#include <bits/stdc++.h>

using namespace std;

mt19937 rng(time(0));

void solve(int n)
{
    vector<pair<int, int>> v;
    map<int, int> mp;
    for (int i=1; i<=n; i++) v.push_back({rng(), i});
    sort(v.begin(), v.end());
    for (int i=1; i<=min(n-3, 57); i++) mp[kth(v[i-1].second)]++;
    priority_queue<pair<int, int>> pq;
    for (auto [x, y]:mp) pq.push({y, x});
    if (!pq.empty()&&cnt(pq.top().second)>(n/3)) return say_answer(pq.top().second),void();
    if (!pq.empty()) pq.pop();
    if (!pq.empty()&&cnt(pq.top().second)>(n/3)) return say_answer(pq.top().second),void();
    if (!pq.empty()) pq.pop();
    if (!pq.empty()&&cnt(pq.top().second)>(n/3)) return say_answer(pq.top().second),void();
    if (!pq.empty()) pq.pop();
    say_answer(-1);
}

• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 65 / 65