[这个是提交记录](https://www.luogu.com.cn/record/130465007)
by a_sad_soul @ 2023-10-19 22:14:45
@[A1234467](/user/455955) 你但凡写个二分找到$l，r$最左和最右然后删掉中间的都不至于用暴力啊QAQ
by a_sad_soul @ 2023-10-19 22:16:39