Submission #205335

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
205335	2020-02-28 15:14:51	MohamedAhmed04	Railway (BOI17_railway)	C++14	100 / 100	447 ms	68596 KiB

railway

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#include <bits/stdc++.h>
using namespace std ;
const int MAX = 1e5 + 10 ;
int arr[MAX] , sz[MAX] , in[MAX] , out[MAX] , Min[MAX] , Max[MAX] , P[MAX][22] , dep[MAX] , lca[MAX] ;
int n , m , k , tim = 1 ;
vector< vector<int> >adj(MAX) ;
vector< vector<int> >v(MAX) ;
vector< vector<int> >Er(MAX) ;
set<int>s[MAX] ;
vector<int>ans ;
map< pair<int , int> , int>idx ;
void dfs(int node , int par)
{
  in[node] = tim++ ;
  sz[node] = 1 ;
  P[node][0] = par ;
  for(int i = 1 ; i < 20 ; ++i)
    P[node][i] = P[P[node][i-1]][i-1] ;
  for(auto &child : adj[node])
  {
    if(child == par)
      continue ;
    dep[child] = dep[node] + 1 ;
 
 
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Compilation message (stderr)

railway.cpp: In function 'void dfs2(int, int)':
railway.cpp:73:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(s[node].size() >= k)
     ~~~~~~~~~~~~~~~^~~~

• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 16 / 16
• Subtask 6: 25 / 25