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 scanner = new Scanner(System.in);
		
		for(;;)
		{
			int a = scanner.nextInt();
			String op = scanner.next();
			int b = scanner.nextInt();
			
			
			int c=0;
			switch(op)
			{
				case "?":
					return;
				case "+":
					c = a+b;
					break;
				case "-":
					c = a-b;
					break;
				case "*":
					c = a*b;
					break;
				case "/":
					c = a/b;
					break;
			}
			System.out.println(c);
		}
		
	}
}