编程题：表达式计算II

Write a program that reads an expression in a line as input and prints out the result. Only integers and operators below are allowed in the expression:


+ - * / % ( )


### 输入格式:

A line of expression.

### 输出格式:

The result.

### 输入样例:


in
(2+32)/2-6


### 输出样例:


out
11







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