제출 #155128

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
155128	2019-09-26 14:25:18	Akashi	철인 이종 경기 (APIO18_duathlon)	C++14	31 / 100	177 ms	35704 KiB

count_triplets

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//#pragma GCC optimize ("Ofast")
#include <bits/stdc++.h>
using namespace std;
int n, m, nrc;
bool viz[100005];
int id[100005], h[100005], low[100005];
vector <int> v[100005];
set <int> v2[100005];
vector <int> ctc[100005];
stack <int> st;
void dfs(int nod, int papa = 0){
    st.push(nod);
    viz[nod] = 1;
    for(auto it : v[nod]){
        if(papa == it) continue ;
        if(!viz[it]){
            h[it] = low[it] = h[nod] + 1;
            dfs(it, nod);
            low[nod] = min(low[nod], low[it]);
        }
        else low[nod] = min(low[nod], low[it]);
    }
    if(low[nod] == h[nod]){
        int x;
        ++nrc;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

count_triplets.cpp: In function 'int main()':
count_triplets.cpp:71:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
count_triplets.cpp:75:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &x, &y);
         ~~~~~^~~~~~~~~~~~~~~~

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