Submission #1167355

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1167355	2025-03-16 03:32:27	SG2Alok	Race (IOI11_race)	C++20	100 / 100	352 ms	30532 KiB

race

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#include "race.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
int sz[200005], mins[1000005];
bool vis[200005];
vector<pair<int, int>> adj[200005];
int ans = 1e9, k;
int dfs(int u, int par){
  if(vis[u]) return 0;
  
  sz[u] = 1;
  for(auto v: adj[u]){
    if(v.fi != par){
      sz[u] += dfs(v.fi, u);
    }
  }
  
  return sz[u];
}
int ctr(int u, int par, int szz){
  for(auto v: adj[u]){
    if(v.fi == par) continue;
    if(!vis[v.fi] && sz[v.fi] * 2 > szz){
      return ctr(v.fi, u, szz);
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57