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 ans=0;
		while(true){
			int a=sc.nextInt();
			String op=sc.next();
			int b=sc.nextInt();
			
			if(op.equals("?"))break;
			
				switch(op){
					case"+":
						ans=a+b;
						break;
					case"-":
						ans=a-b;;
						break;
					case"*":
						ans=a*b;;
						break;
					case"/":
						ans=a/b;;
						break;
				}
				System.out.println(ans);
			}
		}
}