```
bool cmp(Chtholly_tree a,Chtholly_tree b)
{
return a.w<=b.w;
}
```
改为
```
bool cmp(Chtholly_tree a,Chtholly_tree b)
{
return a.w<b.w;
}
```
by Misty7 @ 2023-10-16 21:25:22
```
int _union(re x,re y)
{
fx=find(x);
fy=find(y);
if(fx!=fy)
{
f[x]=fy;
}
}
```
改为
```
int _union(re x,re y)
{
fx=find(x);
fy=find(y);
if(fx!=fy)
{
f[fx]=fy;
}
}
```
AC
by Misty7 @ 2023-10-16 21:28:31
@[Misty_Hazers](/user/344543) 还是RE捏
by IDNo1 @ 2023-10-16 21:28:31
@[IDNo1](/user/777131)
by Misty7 @ 2023-10-16 21:28:43
@[IDNo1](/user/777131) 为什么我没有RE
by Misty7 @ 2023-10-16 21:29:06
@[Misty_Hazers](/user/344543) 话说这个要双向建边吗
by IDNo1 @ 2023-10-16 21:29:29
@[IDNo1](/user/777131) 不用
by Misty7 @ 2023-10-16 21:29:59
@[Misty_Hazers](/user/344543) 开O2全RE，为啥呀qwq
by IDNo1 @ 2023-10-16 21:30:05
@[IDNo1](/user/777131) 代码实现上没有区别
by Misty7 @ 2023-10-16 21:30:38
@[Misty_Hazers](/user/344543) ?
by IDNo1 @ 2023-10-16 21:30:58