Submission #403755

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
403755	2021-05-13 12:09:49	Bill_00	Duathlon (APIO18_duathlon)	C++14	31 / 100	230 ms	43060 KiB

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#include <bits/stdc++.h>
#define pb push_back
#define ff first
#define ss second
#define ll long long
#define N 100005
using namespace std;
ll n, nn, m, timer, ans;
ll low[N], tin[N], p[N], sz[N], newsz[N], compsz[N];
vector<ll> adj[N], newadj[N];
unordered_map<ll, bool> bridge[N];
bool vis[N], mark[N];
void dfs(ll v, ll p = -1) {
    vis[v] = 1;
    tin[v] = low[v] = timer++;
    for (ll to : adj[v]) {
        if(to == p) continue;
        if(vis[to]){
            low[v] = min(low[v], tin[to]);
        } 
        else{
            dfs(to, v);
            low[v] = min(low[v], low[to]);
            if(low[to] > tin[v]){
              bridge[v][to]=1;
              bridge[to][v]=1;
            }
        }
    }
}
 
 
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