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