Submission #205361

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
205361	2020-02-28 16:27:10	TadijaSebez	Olympic Bus (JOI20_ho_t4)	C++11	100 / 100	396 ms	4856 KiB

ho_t4

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
const int N=205;
const int M=50050;
const int inf=2e9+7;
struct Edge{int u,v,c,d;};
Edge edges[M];
bool bridge[M];
struct Bridges{
  static const int NSZ=205;
  vector<pair<int,int>> E[NSZ];
  vector<int> ans;
  int n,disc[NSZ],low[NSZ],tid;
  void init(int _n){n=_n;tid=0;ans.clear();for(int i=1;i<=n;i++)E[i].clear(),disc[i]=low[i]=0;}
  void AddEdge(int u,int v,int e){E[u].pb({v,e});E[v].pb({u,e});}
  void DFS(int u,int p){
    disc[u]=low[u]=++tid;
    for(auto e:E[u])if(e.second!=p){
      int v=e.first;
      if(!disc[v]){
        DFS(v,e.second);
        if(low[v]>disc[u])ans.pb(e.second);
        low[u]=min(low[u],low[v]);
      }else low[u]=min(low[u],disc[v]);
    }
  }
}GPH;
void FindBridges(vector<pair<int,int>> go[],int st,int n){
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

ho_t4.cpp: In function 'int main()':
ho_t4.cpp:108:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
ho_t4.cpp:110:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i %i %i %i",&edges[i].u,&edges[i].v,&edges[i].c,&edges[i].d);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 11 / 11
• Subtask 3: 21 / 21
• Subtask 4: 63 / 63