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;
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(true){

		int ans=0;
		
		if(op.equals("?")){ 
			break;
		} else if (op.equals("+")){
			ans=a+b;
		} else if (op.equals("-")){
			ans=a-b;
		} else if (op.equals("*")){
			ans=a*b;
		} else if (op.equals("/")){
			ans=a/b;
		}

				System.out.println(ans);
				
				a =sc.nextInt();
				op=sc.next();
				b=sc.nextInt();
		}
	}

}