@[中国无法联通](/user/353976) LCA 在外面记录下来免得每次算一遍成为瓶颈。
by SmokedFish @ 2023-05-02 16:52:47
@[SmokedFish](/user/210129) ok
by Yuzu_Soft @ 2023-05-02 17:11:06
@[SmokedFish](/user/210129) [好像不是这个问题](https://www.luogu.com.cn/record/109410016)
感觉dfs哪里写挂了
by Yuzu_Soft @ 2023-05-02 17:16:08