제출 #51967

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
51967	2018-06-22 18:44:12	pzdba	철인 이종 경기 (APIO18_duathlon)	C++14	31 / 100	201 ms	23424 KiB

count_triplets

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#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
typedef long long LL;
pii edges[200005];
vector<pii> g[100005];
bool idx[200005];
int low[100005], vis[100005], p[100005];
LL sz[100005], T = 1;
void dfs1(int u, int p){
  vis[u] = low[u] = T++;
  for(int i=0;i<g[u].size();i++){
    int v = g[u][i].first;
    if(v == p) continue;
    if(vis[v]) low[u] = min(low[u], vis[v]);
    else{
      dfs1(v, u);
      low[u] = min(low[u], low[v]);
      if(low[v] > vis[u]) idx[g[u][i].second] = 1;
    }
  }
}
int root(int a){
  while(p[a] != a){
    p[a] = p[p[a]];
    a = p[a];
  }
  return a;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

count_triplets.cpp: In function 'void dfs1(int, int)':
count_triplets.cpp:13:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<g[u].size();i++){
              ~^~~~~~~~~~~~
count_triplets.cpp: In function 'void dfs2(int, int, int)':
count_triplets.cpp:48:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<scc[u].size();i++){
              ~^~~~~~~~~~~~~~
count_triplets.cpp:52:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<g[cur].size();j++){
               ~^~~~~~~~~~~~~~
count_triplets.cpp:69:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<g[cur].size();j++){
               ~^~~~~~~~~~~~~~
count_triplets.cpp:51:14: warning: unused variable 'sc1' [-Wunused-variable]
   LL s1 = 0, sc1 = 0;
              ^~~
count_triplets.cpp: In function 'int main()':
count_triplets.cpp:97:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0;j<g[i].size();j++){
               ~^~~~~~~~~~~~
count_triplets.cpp:83:7: 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:86:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~

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