Help with this Problem!!

Правка en1, от lusho, 2017-01-27 01:50:02

Hi Codeforces Community.

Can any one of you explain me this problem:

http://mirror.codeforces.com/contest/760/problem/C

i read it a lot of times but I did not understand or please explain me the examples how does the process go?

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en1 Английский lusho 2017-01-27 01:50:02 254 Initial revision (published)