Mike's Sequence - 题目详情 - oj

ID: 1297

远端评测题

1000ms

256MiB

难度: (无)

上传者:

标签>

*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.