Submission #1053211

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1053211	2024-08-11 09:46:19	tolbi	Fountain Parks (IOI21_parks)	C++17	55 / 100	932 ms	114764 KiB

parks

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#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
//void build(std::vector<int> u, std::vector<int> v, std::vector<int> a, std::vector<int> b);
struct DSU{
  vector<int> par;
  int tot;
  DSU(int n):tot(n){
    par.resize(n);
    iota(par.begin(), par.end(), 0);
  }
  int find(int node){
    if (par[node]==node) return node;
    return par[node]=find(par[node]);
  }
  bool merge(int a, int b){
    a=find(a);
    b=find(b);
    if (a!=b) tot--;
    else return false;
    par[a]=b;
    return true;
  }
};
int construct_roads(vector<int> x, vector<int> y) {
  int n = x.size();
  //subtasks 4..5
  DSU dsu(n);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 15
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20
• Subtask 6: 0 / 30