3
30
2016
0

[bzoj]2791: [Poi2012]Rendezvous

以前停了的坑里留下的题，当时太年轻懒得做？

传送门-->http://www.lydsy.com/JudgeOnline/problem.php?id=2791

我不清楚我写的是不是标算，跑的比别人快$1$倍，难道有特技不成？！

Category: bzoj | Tags: LCA 倍增 树剖 环套外向树

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