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 f,n,sum=0;
String op;
while(true){
f=sc.nextInt();
op=sc.next();
n=sc.nextInt();
if(op.contains("+"))
	sum=f+n;
if(op.contains("-"))
	sum=f-n;
if(op.contains("*"))
	sum=f*n;
if(op.contains("/"))
	sum=f/n;
	
if(op.contains("?"))
	break;
System.out.println(sum);
}


}

}
