Submission #378269

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
378269	2021-03-16 11:09:37	negar_a	Railway (BOI17_railway)	C++14	100 / 100	307 ms	45460 KiB

railway

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//!yrt tsuj uoy srettam gnihton no emoc
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define pb push_back
#define mp make_pair
#define pii pair <int, int>
#define fast_io ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define F first
#define S second
const int maxn = 1e5 + 5, lg = 19;
vector <pii> adj[maxn];
vector <int> del[maxn];
vector <int> ans;
set <int> st[maxn];
int par[maxn][lg + 5], h[maxn];
int n, m, k;
void dfs(int v){
  for(auto x : adj[v]){
    int u = x.F;
    if(u != par[v][0]){
      h[u] = h[v] + 1;
      par[u][0] = v;
      for(int i = 1; i < lg; i ++){
        par[u][i] = par[par[u][i - 1]][i - 1];
 
 
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Compilation message (stderr)

railway.cpp: In function 'void sfd(int)':
railway.cpp:75:22: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   75 |    if(st[u.F].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