Not getting problem D of yesterday's round .

Revision en1, by vintage_Petr_Mitrichev, 2019-02-08 13:09:09

Hello , can anyone please clarify what the author is saying in editorial of problem d . I am not getting the dp state . how to think it recursively ?

why is author taking at most case ? what it mean ?

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en1 English vintage_Petr_Mitrichev 2019-02-08 13:09:09 343 Initial revision (published)