Without Text

题目描述

![](https://cdn.luogu.com.cn/upload/vjudge_pic/CF656C/5e16491e0a464f6c70215f2cb6ed8a2f5e114be5.png)You can preview the image in better quality by the link: <http://assets.codeforces.com/files/656/without-text.png>

输入输出格式

输入格式

The only line of the input is a string (between 1 and 50 characters long, inclusive). Each character will be an alphanumeric character or a full stop ".".

输出格式

Output the required answer.

输入输出样例

输入样例 #1

Codeforces

输出样例 #1

-87

输入样例 #2

APRIL.1st