Submission #432285

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
432285	2021-06-18 07:21:32	Mlxa	Stations (IOI20_stations)	C++14	100 / 100	952 ms	732 KiB

stations

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define all(x) x.begin(), x.end()
#define mp make_pair
#define mt make_tuple
#define x first
#define y second
#include "stations.h"
vector<int> label(int n, int k, vector<int> eu, vector<int> ev) {
  assert(k >= n - 1);
  vector<int> labels(n), order;
  vector<vector<int>> g(n);
  for (int i = 0; i < n - 1; ++i) {
    g[ev[i]].push_back(eu[i]);
    g[eu[i]].push_back(ev[i]);
  }
  function<void(int, int, bool)> dfs = [&](int v, int p, bool in) {
    if (in) {
      order.push_back(v);
    }
    for (int u : g[v]) {
      if (u != p) {
        dfs(u, v, !in);
      }
    }
    if (!in) {
      order.push_back(v);
    }
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 61 / 61