shensiyuan2011 @ 2024-07-03 16:14:00
该题主要思路为差分，标签为前缀和，有误导性，建议将标签改为差分。
by qzmoot @ 2024-07-03 16:58:48
@shensiyuan2011 《主要思路》
by shensiyuan2011 @ 2024-07-03 16:59:31
@qzmoot 其实暴力就能过
by qzmoot @ 2024-07-03 17:19:28
@shensiyuan2011 都橙题了你还要他这么样[doge]