Evaluate Mathematical Expression

You are given a string expression that represents a mathematical expression containing non-negative integers and the operators + and *. The expression must be evaluated following the standard order of operations, where multiplication is performed before addition.

For example, the expression 3+5*2 is evaluated as 3+(5*2)=13.

Your task is to write a program that reads an expression from standard input, evaluates it, and prints the result to standard output.

Note: The expression does not contain any spaces, and it is guaranteed to be a valid expression.

inputFormat

The input consists of a single line containing the expression.

For example:

3+5*2

outputFormat

Output the evaluated result as an integer.

For example, for the input above, the output should be:

13

## sample

3+5

8