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) {
		int ans = 0;
		try (Scanner sc = new Scanner(System.in)) {
			while (true) {
				int a = sc.nextInt();
				String b = sc.next();
				int c = sc.nextInt();
				if(b.equals("+")) {
					ans = a + c;
				}else if(b.equals("-")) {
					ans = a - c;
				}else if(b.equals("*")) {
					ans = a * c;
				}else if(b.equals("/")) {
					ans = a / c;
				}else if(b.equals("?")) {
					break;
				}
				System.out.println(ans);
			}
		}
	}
}