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 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a,b,x=0;String s;
        while(true){
            a=sc.nextInt();s=sc.next();b=sc.nextInt();
            switch(s.charAt(0)){
                case '+':x=a+b;break;
                case '-':x=a-b;break;
                case '*':x=a*b;break;
                case '/':x=a/b;break;
                default:System.exit(0);
            }
            System.out.println(x);
        }
    }
}
