@ -1269,6 +1269,8 @@ signed main() {
}
```
#### [$V-Subtree$](https://www.luogu.com.cn/problem/AT_dp_v)
https://blog.csdn.net/Emm_Titan/article/details/123875298
**题意**
给定一棵 $N$ 个节点的树,现在需要将每一个节点染成黑色或白色。