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 {
	public static void main(String[] arg){
		Scanner in = new Scanner(System.in);
		int x,y = 0;
		char op;
		while(true){
			String[] line = in.nextLine().split(" ");
			x = Integer.parseInt(line[0]);	
			op  = line[1].charAt(0);	
			y = Integer.parseInt(line[2]);
			if (op == '?')break;
			
			switch(op){
			case '+':System.out.println(x+y);break;
			case '-':System.out.println(x-y);break;
			case '*':System.out.println(x*y);break;
			case '/':System.out.println(x/y);break;
			}
		}	
	}
}