https://www.luogu.com.cn/problemnew/solution/P3379
by forlight @ 2020-02-25 11:00:10
楼上正解
by Patchouli_Nine @ 2020-02-25 11:00:23
@[林深时x见鹿](/user/294562) https://oi-wiki.org/graph/lca/
by kradcigam @ 2020-02-25 11:05:14
楼上正解
by 霍士弘 @ 2020-02-25 11:06:40
@[赵海鲲](/user/180242) 谢谢，我看了看，这个网站真的很好，各种算法都有~~满足了我学图论的心愿~~QwQ
by EDqwq @ 2020-02-25 11:07:19
@[forlight](/user/97238) 谢谢，不过这个看不懂
by EDqwq @ 2020-02-25 11:07:32
Orz
by Ender32k @ 2020-02-25 11:10:20
@[Ender_32k](/user/306573) QwQ
by EDqwq @ 2020-02-25 11:13:19
学 liu\_cheng\_ao？
by NaCly_Fish @ 2020-02-25 11:16:49
@[林深时x见鹿](/user/294562) 不用谢
by kradcigam @ 2020-02-25 11:24:44