不需要，不会
by vflower @ 2023-11-26 08:56:30
话说怎么同时线段树合并&启发式合并
by vflower @ 2023-11-26 09:15:18
@[vflower](/user/1000066) 谢谢。
by RegisterFault @ 2023-11-26 09:24:40
艹不小心用小号发了
by RegisterFault @ 2023-11-26 09:25:03