Submission #1036781

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1036781	2024-07-27 17:02:58	juicy	Capital City (JOI20_capital_city)	C++17	100 / 100	1221 ms	380100 KiB

capital_city

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#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
const int N = 2e5 + 5, LG = 18, MAX = 3600005;
int n, k, m;
int lst[N], c[N], dep[N], pr[LG][N], id[LG][N], low[MAX], num[MAX], cnt[MAX], lab[MAX];
vector<int> tree[N], g[MAX];
void dfs(int u) {
  for (int v : tree[u]) {
    if (v != pr[0][u]) {
      pr[0][v] = u;
      id[0][v] = c[u];
      for (int i = 1; i < LG; ++i) {
        id[i][v] = ++m;
        pr[i][v] = pr[i - 1][pr[i - 1][v]];
        g[m].push_back(id[i - 1][v]);
        g[m].push_back(id[i - 1][pr[i - 1][v]]);
      }
      dep[v] = dep[u] + 1;
      dfs(v);
    }
 
 
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• Subtask 1: 1 / 1
• Subtask 2: 10 / 10
• Subtask 3: 30 / 30
• Subtask 4: 59 / 59