Submission #303534

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
303534	2020-09-20 11:38:50	Haunted_Cpp	Connecting Supertrees (IOI20_supertrees)	C++17	0 / 100	1 ms	384 KiB

supertrees

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#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
class DisjointSet {
private:
  vector<int> par, sz;
public:
  DisjointSet(int n) {
    par = vector<int>(n);
    iota(par.begin(), par.end(), 0);
    sz = vector<int>(n, 1);
  }
  int root(int x) {
    if (x == par[x]) {
      return x;
    }
    return par[x] = root(par[x]);
  }
  void join(int a, int b) {
    a = root(a);
    b = root(b);
    if (a == b) {
      return;
    }
    if (sz[a] < sz[b]) {
      swap(a, b);
    }
    sz[a] += sz[b];
    par[b] = a;
 
 
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