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 scan = new Scanner(System.in);
		while(true) {
			int a = scan.nextInt();
			String op = scan.next();
			int b = scan.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;
			}
		}
		scan.close();
	}
}