Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.

The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.

Constraints

* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.

Input

The input consists of multiple datasets. Each dataset is given in the following format.


a op b


The input ends with a dataset where op = '?'. Your program should not process for this dataset.

Output

For each dataset, print the value in a line.

Example

Input

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0


Output

3
38
26
10
108
import java.util.Scanner;
class Main
{
    public static void main(String args[])
    {
	int a,b;
	String op;
	Scanner scan=new Scanner(System.in);
	while(true)
	    {
	a=scan.nextInt();
	op=scan.next();
	b=scan.nextInt();
	if(op.equals("?"))break;
	else if(op.equals("+"))
	    System.out.println(a+b);
	else if(op.equals("-"))
	    System.out.println(a-b);
	else if(op.equals("*"))
	    System.out.println(a*b);
	else if(op.equals("/"))
	    System.out.println(a/b);
	    }
    }
}