제출 #1096227

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
1096227	2024-10-04 06:36:35	win_23	Railway (BOI17_railway)	C++17	0 / 100	66 ms	29516 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
#define TASK "SUADUONG"
#define fi first
#define se second 
#define pb push_back
#define ll long long 
#define ii pair< int,int >
#define endl '\n'
const int INF = 1e9;
const ll LINF = 1e18;
const int N = 1e5 +5;
int n, m;
vector<int> adj[N + 5];
int up[N][20], h[N], f[N];
// up[u][i] là tổ tiên thứ 2^i của u 
int k;
int x[N], y[N];
namespace sub{
  void dfs(int u, int par)
  {
    for(auto v : adj[u])
    {
      if(v == par) continue;
      up[v][0] = u;
 
 
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