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);

		for(;;){

			int x = scan.nextInt();
			char ch = scan.next().charAt(0);
			if(ch == '?')
				break;
			int y = scan.nextInt();
			switch(ch){
			case '+':
				System.out.println(x + y);
				break;
			case '-':
				System.out.println(x - y);
				break;
			case '*':
				System.out.println(x * y);
				break;
			case '/':
				System.out.println(x / y);
				break;
			}
		}
	}
}