Submission #976581

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
976581	2024-05-06 18:41:28	happy_node	Meetings 2 (JOI21_meetings2)	C++17	20 / 100	4022 ms	15340 KiB

meetings2

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#include <bits/stdc++.h>
using namespace std;
 
const int MX=2e5+5;
int N;
vector<int> adj[MX];
 
int sz[MX], ans[MX];
 
void dfs(int v, int p, int head, int dep) {
  sz[v]=1;
  for(auto u:adj[v]) {
    if(u==p) continue;
    dfs(u,v,head,dep+1);
    sz[v]+=sz[u];
  }
} 
 
void dfs2(int v, int p, int head, int dep) {
  for(auto u:adj[v]) {
    if(u==p) continue;
    dfs2(u,v,head,dep+1);
  }
  int k=min(sz[v],N-sz[head]);
  ans[2*k]=max(ans[2*k],dep+1);
} 
 
 
int main() {
  cin.tie(0); ios_base::sync_with_stdio(0);
 
 
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• Subtask 1: 4 / 4
• Subtask 2: 16 / 16
• Subtask 3: 0 / 80