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 stdIn = new Scanner(System.in);

		for (;;) {
			int a = stdIn.nextInt();
			String op = stdIn.next();
			int b = stdIn.nextInt();
			int ans = 0;
			
			if (op.equals("?")) break;
			
			switch (op) {
			case "+":
				ans = a + b;
				break;
	
			case "-":
				ans = a - b;
				break;
				
			case "*":
				ans = a * b;
				break;
				
			case "/":
				ans = a / b;
			}
			System.out.println(ans);
		}
	}
}