Mike's Sequence - 题目详情 - CZOJ

ID: 784

远端评测题

1000ms

256MiB

暂无评定

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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.