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 s = new Scanner(System.in);
	int a = s.nextInt();
	char[] op = s.next().toCharArray();
	int b = s.nextInt();

	while(op[0] != 63){
	    if(op[0] == 43) System.out.println(a+b);
	    else if(op[0] == 45) System.out.println(a-b);
	    else if(op[0] == 42) System.out.println(a*b);
	    else if(op[0] == 47) System.out.println(a/b);

	    a = s.nextInt();
	    op = s.next().toCharArray();
	    b = s.nextInt();
	}
    }
}

