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.*;
public class Main {
	public static void main(String[] args) {
		int a,b;
		String op=null;
		Scanner scan = new Scanner(System.in);
		
		while(true){
			a=scan.nextInt();
			op=scan.next();
			b=scan.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;
			}
		}
	}
}