~~树链剖分这种码量大的东西很少有人看的~~ 盲猜树剖超时应该是哪个地方无限递归了 by DepletedPrism @ 2019-07-27 23:42:39
@[DepletedPrism](/space/show?uid=109751) 蟹蟹，我看看 by 万物皆可搜索 @ 2019-07-28 16:01:17