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);

		while (true) {
			long a = scanner.nextInt();
			String op = scanner.next();
			long b = scanner.nextInt();

			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;

			case "?":
				scanner.close();
				return;
			}
		}
	}
}