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