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) {

		int a,b;
		char op;

		Scanner stdIn = new Scanner(System.in);


		while(true) {
			a = stdIn.nextInt();
			op = stdIn.next().charAt(0);
			b = stdIn.nextInt();

			switch(op) {
			case '+':
				System.out.println(a+b);
				break;
			case '-':
				System.out.println(a-b);
				break;
			case '*':
				System.out.println(a*b);
				break;
			case '/':
				System.out.println(a/b);
				break;
			case '?':
				System.exit(0);
			}
		}

	}

}