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, b, c;
        char op;
        while(true){
            a = scan.nextInt();
            op = scan.next().charAt(0);
            b = scan.nextInt();
            if(op == '?'){ break; }
            else if(op == '+'){ c = a + b; }
            else if(op == '-'){ c = a - b; }
            else if(op == '*'){ c = a * b; }
            else{ c = a / b; }
            System.out.println(c);
        }
    }
}
