Submission #938750

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
938750	2024-03-05 13:43:07	Aiperiii	One-Way Streets (CEOI17_oneway)	C++14	0 / 100	2 ms	10528 KiB

oneway

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#include <bits/stdc++.h>
#define int long long
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
const int N=1e5+5;
vector <int> g_brg[N];
vector <pair <int,int> > g_gr[N];
int vis_brg[N],low[N],tin[N],gr[N],To[N],from[N],vis_gr[N];
char ans[N];
map <pair <int,int> ,int> brg;
int tt=0,cnt=0;
void dfs_brg(int v,int p){
    vis_brg[v]=1;
    tt++;
    tin[v]=tt;low[v]=tt;
    for(auto to : g_brg[v]){
        if(to!=p){
            if(vis_brg[to])low[v]=min(low[v],tin[to]);
            else{
                dfs_brg(to,v);
                low[v]=min(low[v],low[to]);
                if(low[to]>tin[v]){
                    brg[{v,to}]++;
                    brg[{to,v}]++;
                }
            }
        }
 
 
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• Subtask 1: 0 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40