Submission #217691

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
217691	2020-03-30 12:40:27	VEGAnn	Duathlon (APIO18_duathlon)	C++14	66 / 100	201 ms	20600 KiB

count_triplets

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#include <bits/stdc++.h>
#define all(x) x.begin(),x.end()
#define sz(x) ((int)x.size())
#define PB push_back
#define pii pair<int,int>
#define ft first
#define sd second
#define MP make_pair
using namespace std;
typedef long long ll;
const int N = 100100;
const int M = 200100;
const int oo = 2e9;
vector<int> g[N];
vector<pii> gr[N];
int n, m, tin[N], fup[N], tt = 0, U[M], V[M], pr[N], siz[N];
int nw_siz[N];
bool mrk[N], bridge[M], cutpoint[N], cp[N], used[N];
ll ans = 0, SZ;
void dfs(int v, int p){
    mrk[v] = 1;
    tin[v] = fup[v] = ++tt;
    for (int nm : g[v]){
        int u = (U[nm] == v ? V[nm] : U[nm]);
        if (u == p) continue;
        if (mrk[u])
 
 
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