Submission #901600

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
901600	2024-01-09 16:27:01	aminjonshermatov	경주 (Race) (IOI11_race)	C++17	100 / 100	555 ms	47952 KiB

race

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#include <bits/stdc++.h>
#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 42
#include "race.h"
#endif
int best_path(int n, int k, int H[][2], int L[]) {
  std::vector<std::vector<std::pair<int, int>>> g(n);
  for (int i = 0; i + 1 < n; ++i) {
    g[H[i][0]].emplace_back(H[i][1], L[i]);
    g[H[i][1]].emplace_back(H[i][0], L[i]);
  }
  std::vector<int> size(n);
  std::vector<bool> died(n, false);
  auto dfs_sz = [&](auto& f, int v, int p) -> int {
    size[v] = 1;
    for (auto [u, _] : g[v]) {
      if (u != p && !died[u]) {
        size[v] += f(f, u, v);
      }
    }
    return size[v];
  };
  auto centroid = [&](auto& f, int v, int p, int desired) -> int {
    for (auto [u, _] : g[v]) {
      if (u != p && !died[u] && size[u] >= desired) {
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57