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);
		StringBuilder str = new StringBuilder();

		int z = 0;

		while (true) {

			int x = scan.nextInt();
			String op = scan.next();
			int y = scan.nextInt();

			if (op.equals("+"))
				z = x + y;
			if (op.equals("-"))
				z = x - y;
			if (op.equals("*"))
				z = x * y;
			if (op.equals("/"))
				z = x / y;

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

			str.append(z + "\n");
		}

		System.out.print(str);

	}
}