据说@ 大佬有神秘效果：
@[Juan_feng](/space/show?uid=66965)
@[沉迷学习的YSJ](/space/show?uid=93483)
by Nero_Claudius @ 2018-10-27 21:47:15
@[DARTH_VADER](/space/show?uid=38859) ~~前排不会~~
by 引领天下 @ 2018-10-27 21:49:12
@[DARTH_VADER](/space/show?uid=38859) 刚在看您的帖子居然被艾特qwqwq？
小蒟蒻不会左偏树呀QAQAQ，这道题第一想法是并查集+分块，然后一看数据范围似乎不行，那就并查集+线段树？
by Juan_feng @ 2018-10-27 21:52:16
tql%%%
by emming @ 2018-10-27 21:52:44
@[Juan_feng](/space/show?uid=66965) %%%
by 引领天下 @ 2018-10-27 21:59:50
@[引领天下](/space/show?uid=39863) 莫名其妙被膜。。。
by Juan_feng @ 2018-10-28 07:00:23
@[Juan_feng](/space/show?uid=66965) 好吧，不过还是蟹蟹
by Nero_Claudius @ 2018-10-28 08:27:52
@[DARTH_VADER](/space/show?uid=38859) 小蒟蒻太菜了什么忙都帮不上QAQAQ
by Juan_feng @ 2018-10-28 08:28:41