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
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan=new Scanner(System.in);
			int c=0;
			while(true) {
				int a=scan.nextInt();
				String op=scan.next();
				int b=scan.nextInt();
			if(op.equals("+")) {
				c=a+b;
			}
			else if(op.equals("-")) {
				c=a-b;
			}
			else if(op.equals("*")) {
				c=a*b;
			}
			else if(op.equals("/")) {
				c=a/b;
			}
			else if(op.equals("?")) {
				break;
			}
			System.out.printf("%d\n",c);
			}
		scan.close();
}
}
