Submission #420224

---

Source Code Expand

#include<vector>
#include<cmath>
#include<map>
#include<cstdlib>
#include<iostream>
#include<sstream>
#include<fstream>
#include<string>
#include<algorithm>
#include<cstring>
#include<cstdio>
#include<set>
#include<stack>
#include<bitset>
#include<functional>
#include<ctime>
#include<queue>
#include<deque>
#include<complex>
using namespace std;
#define pb push_back
#define pf push_front
typedef long long lint;
typedef complex<double> P;
#define mp make_pair
#define fi first
#define se second
typedef pair<int,int> pint;
#define All(s) s.begin(),s.end()
#define rAll(s) s.rbegin(),s.rend()
#define REP(i,a,b) for(int i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)
struct unionf{
	vector <int> data;
	unionf(int size):data(size,-1){}
	bool unions(int x,int y){
		x=root(x);y=root(y);
		if(x!=y){
			if(data[y]<data[x]){int d=x;x=y;y=d;}
			data[x]+=data[y];data[y]=x;
		}
		return x!=y;
	}
	bool finds(int x,int y){
		return root(x)==root(y);
	}
	int root(int x){
		return data[x]<0?x:data[x]=root(data[x]);
	}
	int find(int x){
		return -data[x];
	}
};
int main()
{
	int n,q,p,a,b;
	cin>>n>>q;
	unionf uni(n+10);
	rep(i,q){
		cin>>p>>a>>b;
		if(p==0) uni.unions(a,b);
		if(p==1){
			if(uni.finds(a,b)) cout<<"Yes"<<endl;
			else cout<<"No"<<endl;
		}
	}
}

Submission Info

Judge Result