Hello codeforces!

Too often, I find editorials with only the solutions to the problems, without any explanation as to how one is to derive them. Whilst I appreciate that there are infinite intuitions and derivations leading to any solution, I thought it would be good if I shared my own intuition, so hopefully people can learn and apply similar ideas and techniques for future problems!

I've made a video editorial explaining my intuition at https://youtu.be/3X-1PBLepwY for anyone who is interested, as well as my 35th place commentated screencast at https://youtu.be/q_RPqdRjmuM (if you are fast enough to read this, the videos may still be processing)! If there is enough demand, I'll also write my intuition in this blog.

Wish you all good luck in the future!