#include<bits/stdc++.h>
using namespace std;
vector<pair<int,int>> adj;
vector<int> parent;
vector<int> Rank;
int n=4;
void addEdge(int i, int j)
{
adj.push_back(make_pair(i,j));
}
void makeSet()
{
parent.resize(n);
Rank.resize(n);
for(int i=0; i<n; i++)
{
parent[i]=-1;
Rank[i]=1;
}
}
int find(int i)
{
if(parent[i]==-1) return i;
else return parent[i]=find(parent[i]);
}
void Union(int i, int j)
{
int s1 = find(i);
int s2 = find(j);
if(s1!=s2)
{
if(Rank[s1]<Rank[s2])
{
parent[s1]=s2;
Rank[s2]+=Rank[s1];
}
else
{
parent[s2]=s1;
Rank[s1]+=Rank[s2];
}
}
}
bool detectCycle()
{
makeSet();
for(auto edge:adj)
{
int i=edge.first;
int j=edge.second;
int s1=find(i);
int s2=find(j);
if(s1!=s2) Union(i,j);
else {
cout<<"Cycle detected"<<endl;
cout<<"Their parent are "<<s1<<" "<<s2<<endl;
return true;
}
}
return false;
}
int main()
{
addEdge(0,1);
addEdge(1,2);
addEdge(2,3);
addEdge(3,0);
cout<<detectCycle()<<endl;
// for(auto i:Rank) cout<<i<<" ";
for(int i=0; i<n; i++)
{
if(parent[i]==-1) cout<<"Representative "<<i<<" Total size "<<Rank[i]<<endl;
}
cout<<endl;
cout<<count(parent.begin(), parent.end(), -1)<<endl;
}
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