Need Help — How to solve [4674 — Post offices] [Live Archive] ?

Правка en4, от Khairy, 2015-08-11 03:56:39

Problem Link: Here

Any hints will be appreciated.

I thought about DP but I couldn't know how to manage it.

Thanks

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en4 Английский Khairy 2015-08-11 03:56:39 12
en3 Английский Khairy 2015-08-09 07:15:47 10 Tiny change: 'manage it.' -> 'manage it.\n\nThanks'
en2 Английский Khairy 2015-08-04 08:19:34 60
en1 Английский Khairy 2015-08-02 22:34:36 201 Initial revision (published)