https://www.luogu.com.cn/record/33716461
A题记录，跑的飞快，一点也不卡常。
by 传奇英雄 @ 2020-05-19 11:06:23
改代码要有耐心，千万不要急躁。（说的容易做的难）
by 传奇英雄 @ 2020-05-19 11:07:48
IEE
by Miller2019 @ 2020-05-19 11:15:03
****
by Implicit @ 2020-05-19 11:24:43
qpee
by bovine__kebi @ 2020-05-19 11:34:58
qpee
by Froggy @ 2020-05-19 11:59:30
Froggy！！！
by zhoukangyang @ 2020-06-09 21:30:00
thx
by wlzhouzhuan @ 2020-07-19 23:06:58
重心写错太真实了
如何看待我把重心找出来，然后不管重心直接把子节点放进去递归的操作
by 笑天真 @ 2020-11-04 11:59:13