Hello Codeforces!

Recently, I wrote an editorial for a famous problem in AtCoder, AWTF2019-E e. The original is here(written in Japanese). This is known as one of the hardest problem in AtCoder and ONLY 18 people have solved this. I think this must be caused by lack of editorials. Actually, the official editorial by rng_58 is not detailed but rough. I hope the editorial I wrote is helpful for you and more programmers solve the problem.

My new editorials is on Qiita, Japanese programmers' blog website, and it is written in Japanese. I'm going to translate it to English (and Russian perhaps) and post it to Codeforces. Look forward to it.
Thank you for reading this blog.