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.*;
import java.text.*;

class Main {
    public static void main(String[]args)throws Exception {
        Scanner sc = new Scanner(System.in);
        for(;;) {
            int a = sc.nextInt();
            char c = sc.next().charAt(0);
            int b = sc.nextInt();
            int r = 0;
            if(c=='?') break;
            else if(c=='+') r = a + b;
            else if(c=='-') r = a - b;
            else if(c=='*') r = a * b;
            else if(c=='/') r = a / b;
            System.out.println(r);
        }
    }
}