Submission #1029777

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1029777	2024-07-21 10:17:31	huutuan	Roller Coaster Railroad (IOI16_railroad)	C++14	100 / 100	165 ms	34340 KiB

railroad

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#include "railroad.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long
struct DSU{
   vector<int> lab;
   void init(int n){
      lab.assign(n+1, -1);
   }
   int find_set(int u){
      return lab[u]<0?u:lab[u]=find_set(lab[u]);
   }
   bool union_sets(int u, int v){
      u=find_set(u); v=find_set(v);
      if (u!=v){
         if (lab[u]>lab[v]) swap(u, v);
         lab[u]+=lab[v];
         lab[v]=u;
         return 1;
      }
      return 0;
   }
} dsu;
const int N=4e5+10;
int d[N];
 
 
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• Subtask 1: 11 / 11
• Subtask 2: 23 / 23
• Subtask 3: 30 / 30
• Subtask 4: 36 / 36