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;

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();

			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;
				break;
			}

			System.out.println(ans);

		}

		}
	}