Mike's Sequence - Problem Detail - HFOJ

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ID: 1246

Type: RemoteJudge

1000ms

256MiB

Difficulty: (None)

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*special problem

divide and conquer

implementation

math

Description

You won't find this sequence on OEIS.

One integer $r$ ($-45 \le r \le 2999$).

One integer.

Input

One integer $r$ ($-45 \le r \le 2999$).

Output

One integer.