Submission #128273

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
128273	2019-07-10 15:48:10	mohammedehab2002	Mergers (JOI19_mergers)	C++11	100 / 100	1603 ms	144248 KiB

mergers

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#include <iostream>
#include <vector>
#include <set>
using namespace std;
int st[500005],dep[500005],dp[20][500005],q[500005],par[500005],deg[500005];
set<pair<int,int> > s;
vector<int> v[500005],inv[500005],comp[500005];
void pre(int node,int p)
{
  dep[node]=dep[p]+1;
  dp[0][node]=p;
  for (int i=1;i<20;i++)
  dp[i][node]=dp[i-1][dp[i-1][node]];
  for (int u:v[node])
  {
    if (u!=p)
    pre(u,node);
  }
}
int lca(int u,int v)
{
  if (dep[u]<dep[v])
  swap(u,v);
  int dist=dep[u]-dep[v];
  for (int i=0;i<20;i++)
  {
    if (dist&(1<<i))
    u=dp[i][u];
  }
  if (u==v)
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

mergers.cpp: In function 'int main()':
mergers.cpp:83:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&k);
  ~~~~~^~~~~~~~~~~~~~
mergers.cpp:87:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&a,&b);
   ~~~~~^~~~~~~~~~~~~~
mergers.cpp:94:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&st[i]);
   ~~~~~^~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 24 / 24
• Subtask 3: 14 / 14
• Subtask 4: 22 / 22
• Subtask 5: 30 / 30