Submission #826870

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
826870	2023-08-16 05:37:39	khshg	Two Currencies (JOI23_currencies)	C++14	0 / 100	3 ms	980 KiB

currencies

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#include<bits/stdc++.h>
using namespace std;
#define int long long
const int LG = 24;
int N, M, Q;
vector<pair<int, int>> e;
vector<vector<pair<int, int>>> adj;
vector<array<int, LG>> par;
vector<int> lvl;
vector<vector<int>> pp;
void dfs(int s) {
  for(auto& v : adj[s]) {
    int u = v.first;
    if(u == par[s][0]) continue;
    lvl[u] = lvl[s] + 1;
    par[u][0] = s;
    for(int i = 1; i < LG; ++i) {
      par[u][i] = par[par[u][i - 1]][i - 1];
    }
    dfs(u);
  }
}
int lca(int s, int t) {
  if(lvl[t] > lvl[s]) swap(s, t);
  for(int i = LG - 1; i >= 0; --i) {
    if(lvl[par[s][i]] <= lvl[t]) {
      s = par[s][i];
 
 
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• Subtask 1: 0 / 10
• Subtask 2: 0 / 28
• Subtask 3: 0 / 30
• Subtask 4: 0 / 32