제출 #963721

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
963721	2024-04-15 14:14:05	alextodoran	조이터에서 친구를 만드는건 재밌어 (JOI20_joitter2)	C++17	100 / 100	906 ms	62356 KiB

joitter2

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/**
 _  _   __  _ _ _  _  _ _
 |a  ||t  ||o    d | |o  |
| __    _| | _ | __|  _ |
| __ |/_  | __  /__\ / _\|
**/
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N_MAX = 100000;
int N, M;
int root[N_MAX + 2];
int cnt[N_MAX + 2];
set <int> in[N_MAX + 2];
set <int> ins[N_MAX + 2];
set <pair <int, int>> out[N_MAX + 2];
ll answer;
ll f (int u) {
    return (ll) in[u].size() * cnt[u] + (ll) cnt[u] * (cnt[u] - 1);
}
int find_root (int u) {
 
 
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