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.*;

class Main {
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		while(true){
			int a = stdIn.nextInt();
			String op = stdIn.next();
			int b = stdIn.nextInt();
			if(op.equals("?"))
				break;
			switch (op.charAt(0)) {
				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;
			}
		}
	}
}