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) {

		try (Scanner sc = new Scanner(System.in);) {

			while (true) {
				int a = sc.nextInt();
				String op = sc.next();
				int b = sc.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;
				}
			}
		}
	}
}