Problem: 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

Solution (in JAVA):

Solution:
import java.util.Scanner;

public class Main
{

	public static void main(String[] args)
	{
		Scanner in=new Scanner(System.in);
		int a,b;
		String op;
		
		a=in.nextInt();
		op=in.next();
		b=in.nextInt();
		
		while(!op.equals("?"))
		{
			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);
			
			a=in.nextInt();
			op=in.next();
			b=in.nextInt();
		}

	}

}