Need help in solving problem As

Revision en1, by LilyWhite, 2020-08-25 19:44:34

I can usually get to C/D in contests. However, I often get stuck at As for overestimating its complexity.

Apart from this, I code really slow and buggy at A, but code way better at Cs and Ds

So what should I do to solve this interesting problem of me?

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en1 English LilyWhite 2020-08-25 19:44:34 288 Initial revision (published)