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.*;
class Main{
    Scanner sc=new Scanner(System.in);
    void main(){
	while(true){
	    int a=sc.nextInt();
	    String op=sc.next();
	    int b=sc.nextInt();
	    if(op.equals("?"))break;
	    int ans=a+b;
	    if(op.equals("-"))ans=a-b;
	    if(op.equals("*"))ans=a*b;
	    if(op.equals("/"))ans=a/b;
	    System.out.println(ans);
	}
	
    }
    public static void main(String[]ag){
	new Main().main();
    }
}