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;
class Main{
public static void main(String[] args){
Scanner scan= new Scanner(System.in);

while(true){
int a=scan.nextInt();
String b=scan.next();
int c=scan.nextInt();
if("?".equals(b))
break;
if("+".equals(b)){
System.out.println((a+c));
}
if("-".equals(b)){
System.out.println(a-c);
}
if("*".equals(b)){
System.out.println(a*c);
}
if("/".equals(b)){
System.out.println(a/c);

}

}
}
}