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.*;

public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		
		while(true){
			int a = scanner.nextInt();
			String op = scanner.next();
			int b = scanner.nextInt();
			if(op.equals("?")){break;}
			switch (op) {
			case "+":System.out.println(a + b);break;
			case "-":System.out.println(a - b);break;
			case "*":System.out.println(a * b);break;
			case "/":System.out.println(a / b);break;			
			}
		}
		scanner.close();
	}

}