Problem: 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

Solution (in JAVA):

Solution:
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 b		= sc.nextInt();
			
			if ( "?".equals(op) ) {
				break;
			}

			int calcRes = 0;
			if ( "+".equals(op) ) {
				calcRes = a+b;

			} else if ( "-".equals(op) ) {
				calcRes = a-b;

			} else if ( "*".equals(op) ) {
				calcRes = a*b;

			} else if ( "/".equals(op) ) {
				calcRes = a/b;

			}

			System.out.println( calcRes );
		}
		
	}
}