刚学主席树就做这个,nb
by x_angelkawaii_x @ 2018-12-30 21:17:13
这不是树剖吗
by hyfhaha @ 2018-12-30 21:18:33
@[hyfhaha](/space/show?uid=58711) %%%您发明新式树剖
by 海洋 @ 2018-12-30 21:38:11
太虚伪了！
by Kuristina @ 2020-07-27 19:54:28
考古
by Hadtsti @ 2023-12-17 06:38:53