zhoujinhong @ 2023-09-22 14:22:26
#include<bits/stdc++.h>
using namespace std;
int s[10010];
int find(int t)
{
if(t==s[t]) return t;
else return find(s[t]);
}
void merge(int x,int y)
{
x=find(x);
y=find(y);
if(x!=y) s[x]=s[y];
}
bool check(int x,int y)
{
x=find(x);
y=find(y);
if(s[x]==s[y]) return 1;
else return 0;
}
int main()
{
int n,m;
int z,x,y;
cin>>n>>m;
for(int i=1;i<=n;i++) s[i]=i;
while(m--)
{
cin>>z>>x>>y;
if(z==1)
{
merge(x,y);
}
else
{
if(check(x,y)) cout<<"Y"<<'\n';
else cout<<"N"<<'\n';
}
}
return 0;
}
by zhoujinhong @ 2023-09-22 14:35:26
以AC,不用回复
by wsdyz2010 @ 2023-10-19 20:19:05
我和你一样,也T了...能讲下为什么嘛
by huangmingyi @ 2023-11-05 15:06:16
@wsdyz2010 要把
by wsdyz2010 @ 2023-11-06 19:08:08
@huangmingyisunny1804 嗯嗯,当时找出原因了,就是这个