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