Submission #1176304

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1176304	2025-03-30 15:12:53	pera	Race (IOI11_race)	C++20	100 / 100	260 ms	34296 KiB

race

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#include<bits/stdc++.h>
using namespace std;
const int N = 2E5 + 1 , M = 1E6 + 1;
vector<int> dead(N) , sz(N) , f(M , -1);
vector<pair<int , int>> g[N];
int gsz(int u , int p = 0){
   int s = 0;
   for(auto [v , w] : g[u]){
      if(v != p && !dead[v]){
         s += gsz(v , u);
      }
   }
   sz[u] = ++s;
   return sz[u];
}
int find(int u , int m , int p = 0){
   for(auto [v , w] : g[u]){
      if(v != p && !dead[v] && sz[v] > m / 2){
         return find(v , m , u);
      }
   }
   return u;
}
void calc(int u , int p , int D , int L , int K , vector<pair<int , int>> &d){
   if(L > K){
      return;
   }
   d.emplace_back(L , D);
   ++D;
   for(auto [v , w] : g[u]){
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 22 / 22
• Subtask 4: 57 / 57