제출 #854777

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
854777	2023-09-28 20:19:21	alex_2008	Race (IOI11_race)	C++17	100 / 100	603 ms	60176 KiB

race

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#include "race.h"
#include <iostream>
#include <algorithm>
#include <map>
#include <vector>
#include <string>
#include <unordered_map>
#include <cassert>
using namespace std;
const int MAX_N = 5e5 + 10;
bool used[MAX_N];
int subtree[MAX_N], dist[MAX_N], height[MAX_N];
int h[MAX_N][2], l[MAX_N];
int KK;
int ans = MAX_N;
vector <vector<pair<int, int>>> G;
int find_centroid(int v) {
  int p = -1;
  int u = v;
  while (1) {
    int x = -1;
    for (auto it : G[u]) {
      if (it.first == p) continue;
      if (used[it.first]) continue;
      if (2 * subtree[it.first] > subtree[v]) {
        x = it.first;
        break;
      }
    }
    if (x == -1) return u;
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57