_QWOiNYUIVMPFSBKLiGSMAP_'s blog

By _QWOiNYUIVMPFSBKLiGSMAP_, history, 17 months ago, In English,

Could any one explain to me the solution of this problem ?

http://codeforces.com/contest/248/problem/C

 
 
 
 
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