Submission #374562

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
374562	2021-03-07 12:57:17	eulerdesoja	Duathlon (APIO18_duathlon)	C++14	100 / 100	135 ms	28392 KiB

count_triplets

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#include<bits/stdc++.h>
#include<fstream>
using namespace std;
#define ll long long
#define pb push_back
#define sz(x) int(x.size())
typedef pair<int,int>ii;
typedef vector<int> vi;
void setIO(string s) {
  ios_base::sync_with_stdio(0); cin.tie(0); 
  freopen((s+".in").c_str(),"r",stdin);
  freopen((s+".out").c_str(),"w",stdout);
}
const int mxn=1e5+5;
int n,m,t,bcc=1,cnt,sz[2*mxn],in[mxn],low[mxn];
vi g[mxn],bg[2*mxn],stck;
ll ans;
void dfs(int i,int p){
  in[i]=low[i]=++t;
  stck.pb(i);
  cnt++;
  for(int j:g[i])if(j!=p){
    if(in[j])low[i]=min(low[i],in[j]);
    else{
      dfs(j,i);
      low[i]=min(low[i],low[j]);
      if(low[j]>=in[i]){
 
 
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Compilation message (stderr)

count_triplets.cpp: In function 'void setIO(std::string)':
count_triplets.cpp:14:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   14 |   freopen((s+".in").c_str(),"r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
count_triplets.cpp:15:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   15 |   freopen((s+".out").c_str(),"w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 11 / 11
• Subtask 3: 8 / 8
• Subtask 4: 10 / 10
• Subtask 5: 13 / 13
• Subtask 6: 15 / 15
• Subtask 7: 20 / 20
• Subtask 8: 8 / 8
• Subtask 9: 10 / 10