제출 #733662

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
733662	2023-05-01 07:24:06	bin9638	철인 이종 경기 (APIO18_duathlon)	C++17	0 / 100	145 ms	32304 KiB

count_triplets

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#include <bits/stdc++.h>
using namespace std;
#define N 200010
#define ll long long
#define fs first
#define sc second
#define ii pair<int,int>
#define pb push_back
ll ans=0;
ll times,num[N],low[N],n,m,ktr[N],dem,sz[N],child[N];
vector<int>g[N],edge[N];
stack<int>st;
void visit(int u,int p)
{
    num[u]=low[u]=++times;
    for(auto v:g[u])
            if(num[v]!=0)
            {
                low[u]=min(low[u],num[v]);
            }else
            {
                st.push(u);
                visit(v,u);
                low[u]=min(low[u],low[v]);
                if(low[v]==num[u])
                {
 
 
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