2456: Exclusive or

内存限制:128 MB 时间限制:3.000 S
评测方式:文本比较 命题人:
提交:0 解决:0

题目描述

Given n, find the value of 


Note: ⊕ denotes bitwise exclusive-or.

输入

The input consists of several tests. For each tests:

A single integer n (2≤n<10500).

输出

For each tests:

A single integer, the value of the sum.

样例输入 复制

3
4

样例输出 复制

6
4