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;
class Main{
   public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
    	int a;
    	String op;
    	int b;
    	
    	for(;;){
    		a = scan.nextInt();
        	op = scan.next();
    		b = scan.nextInt();
		if(op.equals("+")){
		   System.out.println(a+b);
		}else if(op.equals("-")){
			   System.out.println(a-b);
		}else if(op.equals("*")){
			   System.out.println(a*b);
		}else if(op.equals("/")){
			   System.out.println(a/b);
		}
		else{
		  break;
		}
    	}
   }
}