제출 #485435

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
485435	2021-11-07 18:23:23	blue	Pilot (NOI19_pilot)	C++17	100 / 100	987 ms	52124 KiB

pilot

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#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
using vi = vector<int>;
const int mx = 1'000'000;
vi H;
long long ans = 0;
vi parent(mx);
vi subtree(mx, 1);
int root(int u)
{
    if(parent[u] == u) return u;
    else
    {
        parent[u] = root(parent[u]);
        return parent[u];
    }
}
long long ch(long long v)
{
    return v*(v+1)/2;
}
 
 
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