@[lzber](/user/543206) 这好像是常识 by Aisaka_Taiga @ 2023-06-19 21:52:45
<https://www.luogu.com.cn/discuss/531072> 查理线段树![](//图.tk/4) by 沉石鱼惊旋 @ 2023-06-19 21:55:10