Evaluate Arithmetic Expression

You are given a string expression that represents a valid arithmetic expression. The expression contains non-negative integers and the operators +, -, *, and /. The expression must be evaluated based on the standard operator precedence and associativity rules.

Note: Division is performed as integer division, i.e. the result is truncated toward zero. For example, \(10/3=3\) and \(10/-3=-3\).

Your task is to compute and output the integer result of the given expression.

inputFormat

The input consists of a single line containing the arithmetic expression as a string. There are no spaces in the expression.

Example:

2+3*4

outputFormat

Output a single integer which is the result of evaluating the expression.

Example Output:

14

## sample

2+3*4

14