证据：

https://www.luogu.com.cn/record/45736232

https://miku39iloveyou.blog.luogu.org/solution-p2786

https://www.luogu.com.cn/record/45692865

https://www.luogu.com.cn/blog/Imakf/solution-p1449

(由于证据不够，故先不去用户举报专区发帖