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Help ?????

Revision en1, by _QWOiNYUIVMPFSBKLiGSMAP_, 2017-10-15 22:41:55

could any one please explain this problem solution to me

http://codeforces.com/contest/365/problem/C

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en1 English _QWOiNYUIVMPFSBKLiGSMAP_ 2017-10-15 22:41:55 162 Initial revision (published)