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);
		int a=sc.nextInt();String op =sc.next();int b=sc.nextInt();
		while (!op.equals("?")){
				if(op.equals("+")){
			System.out.println(a + b);
		}else if(op.equals("-")){
			System.out.println(a - b);
		}else if(op.equals("*")){
			System.out.println(a * b);
		}else if(op.equals("/")){
			System.out.println(a / b);
		}else {System.out.println("tas");}
				a=sc.nextInt();op =sc.next();b=sc.nextInt();}
				}
		}