@[SanSha_awa](/user/1176070)
```cpp
bool cmp(Node x, Node y){
return x.r <= y.r;
}
```
应改为
```cpp
bool cmp(Node x, Node y){
return x.r < y.r;
}
```
by xiaoshumiao @ 2023-12-13 18:22:42
@[xiaoshumiao](/user/1008513) 谢谢！
by SanSha_awa @ 2023-12-13 18:32:54