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 sc = new Scanner(System.in);

		while(true) {
			int num1 = sc.nextInt();
			String ope = sc.next();
			int num2 = sc.nextInt();

			if(ope.equals("?")) break;

			int ans = 0;
			switch(ope) {
				case "+":
					ans = num1 + num2;
					break;
				case "-":
					ans = num1 - num2;
					break;
				case "/":
					ans = num1 / num2;
					break;
				case "*":
					ans = num1 * num2;
					break;
			}
			System.out.println(ans);
		}

		sc.close();

	}

}