Submission #129970

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
129970	2019-07-13 16:52:01	TadijaSebez	One-Way Streets (CEOI17_oneway)	C++11	100 / 100	244 ms	29868 KiB

oneway

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#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int N=100050;
const int L=17;
vector<pair<int,int>> G[N];
vector<pair<int,int>> edges;
stack<int> s;
bool in[N];
int disc[N],low[N],tid;
int csz,comp[N];
void Tarjan(int u, int p)
{
  disc[u]=low[u]=++tid;
  s.push(u);in[u]=1;
  for(int i=0;i<G[u].size();i++) if(G[u][i].second!=p)
  {
    int v=G[u][i].first;
    if(!disc[v])
    {
      Tarjan(v,G[u][i].second);
      low[u]=min(low[u],low[v]);
    }
    else if(in[v]) low[u]=min(low[u],disc[v]);
  }
  if(disc[u]==low[u])
  {
    int v;
    csz++;
    do
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

oneway.cpp: In function 'void Tarjan(int, int)':
oneway.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<G[u].size();i++) if(G[u][i].second!=p)
              ~^~~~~~~~~~~~
oneway.cpp: In function 'int main()':
oneway.cpp:85:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i %i",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
oneway.cpp:88:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i %i",&u,&v);
   ~~~~~^~~~~~~~~~~~~~~
oneway.cpp:107:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%i",&q);
  ~~~~~^~~~~~~~~
oneway.cpp:110:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%i %i",&u,&v);
   ~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40