Can't get the idea for tricky problem from Petrozavodsk 2014

Revision en1, by LightRay, 2017-05-10 21:50:33

Solving the contest from gym I found the problem I even don't know how to approach. The problem is here: http://codeforces.net/gym/100451/problem/G

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  Rev. Lang. By When Δ Comment
en2 English LightRay 2017-05-10 22:09:12 2
en1 English LightRay 2017-05-10 21:50:33 207 Initial revision for English translation
ru1 Russian LightRay 2017-05-10 21:50:06 207 Первая редакция (опубликовано)