제출 #592715

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
592715	2022-07-09 13:52:53	ikaurov	경주 (Race) (IOI11_race)	C++17	100 / 100	422 ms	74704 KiB

race

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#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define all(arr) (arr).begin(), (arr).end()
#define ll long long
#define ld long double
#define pb push_back
#define sz(x) int((x).size())
#define fi first
#define se second
#define endl '\n'
const int N = 2e5 + 20, INF = 1e9;
vector<pair<int, int>> g[N];
map<ll, int> min_edges[N];
ll delta_length[N], delta_cnt[N];
ll ans = INF, K;
void dfs(int v, int p){
  int maxguy = -1, maxw;
  for (auto [u, w] : g[v]){
    if (u == p) continue;
    dfs(u, v);
    if (maxguy == -1 || sz(min_edges[maxguy]) < sz(min_edges[u])) maxguy = u, maxw = w;
  }
  if (maxguy != -1){
    min_edges[v] = move(min_edges[maxguy]), delta_length[v] = delta_length[maxguy] + maxw,
    delta_cnt[v] = delta_cnt[maxguy] + 1;
  }
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57