A cool thing I learned in Problem C in last Div3. 611

Revision en1, by MasterMind, 2019-12-30 18:18:08

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Today, I want to share with you a very cool thing I learned in Problem C in the last Div.3 contest.

Prerequisite: Please read the problem if you haven't already.

I prepared a 13 minutes video on youtube to show you what I learned, and hopefully you will learn something too.

Enjoy the video!

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en1 English MasterMind 2019-12-30 18:18:08 563 Initial revision (published)