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,b;
		String op;


		do {
			a=sc.nextInt();
			op=sc.next();
			b=sc.nextInt();

				if(op.equals("+")){System.out.println(a+b);}
				if(op.equals("-")){System.out.println(a-b);}
				if(op.equals("*")){System.out.println(a*b);}
				if(op.equals("/")){System.out.println(a/b);}
		}
		while(!(op.equals("?"))) ;
	}
}

