70WA
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70WA
687213
Wen_SuHuai楼主2022/5/14 13:40
#include<bits/stdc++.h>
using namespace std;
int par[10010],rank[10010];
void init(int n){
	for(int i = 0 ; i < n ; i++){
		par[i] = i;
		rank[i] = 0;
	}
}
int find(int x){
	if(par[x] == x) return x;
	else return par[x] = find(par[x]);
}
void unite(int x,int y){
	x = find(x);
	y = find(y);
	if(x == y) return;
	if(rank[x] == rank[y]) rank[x]++;
	if(rank[x] < rank[y]) par[x] = y;
	else par[y] = x;
}
int main(){
	int N,M,Z,X,Y;
	cin>>N>>M;
	init(1001);
	for(int i = 0 ; i < M ; i++){
		cin>>Z>>X>>Y;
		if(Z == 1) unite(X,Y);
		if(Z == 2){
			if(find(X) == find(Y)) cout<<'Y'<<"\n";
			else cout<<'N'<<"\n";
		}
	}
}
2022/5/14 13:40
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