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 x = sc.nextInt();
            String a = sc.next();
            int y = sc.nextInt();
            int z = 0;

            if(a.equals("+")) z = x + y;
            if(a.equals("-")) z = x - y;
            if(a.equals("*")) z = x * y;
            if(a.equals("/")) z = x / y;
            if(a.equals("?")) break;

            System.out.printf("%d\n",z);
        }    
    } 
}
