So how can CF720B be solved in linear time?

Правка en1, от 718_MiL, 2021-06-02 11:20:43

I've noticed that in the tutorial the author mentioned that there exist an linear time solution, but I don't know what the solution is ...

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en1 Английский 718_MiL 2021-06-02 11:20:43 182 Initial revision (published)