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 a = sc.nextInt();
		String op = sc.next();
		int c = sc.nextInt();

		if (op.equals("?"))break;

		int ans = 0;

		switch(op){
		case "+":
			ans = a + c;
			break;
		case "-":
			ans = a - c;
			break;
		case "*":
			ans = a * c;
			break;
		case "/":
			ans = a / c;
			break;
		}

	System.out.println(ans);

	}
    }
}
