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:
public class Main {
	public static void main(String[] args){
		java.util.Scanner scan = new java.util.Scanner(System.in);
		while(true){
			int a = Integer.parseInt(scan.next());
			String op = scan.next();
			int b = Integer.parseInt(scan.next());

			if("+".equals(op)){
				System.out.println(a + b);
			}else if("-".equals(op)){
				System.out.println(a - b);
			}else if("*".equals(op)){
				System.out.println(a * b);
			}else if("/".equals(op)){
				System.out.println(a / b);
			}else if("?".equals(op)){
				break;
			}
		}
		scan.close();

	}

}