13是专门卡odt的数据，过不了
by Diamiko @ 2021-11-15 11:20:01
@[Gloaming](/user/112275) 这题的 #13 卡珂朵莉树
by John_Smith @ 2021-11-15 11:20:29
如果你写线段树还可能被 #12 卡
by John_Smith @ 2021-11-15 11:20:53
这种申必题最好用分块写
by John_Smith @ 2021-11-15 11:21:43
@[Diamiko](/user/203102) @[John_Smith](/user/440535) thx，这就去写分块
by Gloaming @ 2021-11-15 11:42:49