@[星小雨](/space/show?uid=20435) 倍增LCA？
by Rbu_nas @ 2018-10-16 21:52:41
帮你挖挖坟 https://www.luogu.org/discuss/show?postid=64193
by Rbu_nas @ 2018-10-16 21:53:42
@[Rem°](/space/show?uid=80358) lca套树上主席树
by 星小雨 @ 2018-10-16 21:53:49
@[Rem°](/space/show?uid=80358) 很抱歉，我的代码风格就是dep[1]=1= =
by 星小雨 @ 2018-10-16 21:54:46