Problem: 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

Solution (in JAVA):

Solution:
import java.util.Scanner;

class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int a, b;
		String op;
		while(true){
			a = sc.nextInt();
			op = sc.next();
			b = sc.nextInt();
			if(op.equals("?"))break;
			if( (0<=a) && (b<=20000) ){
				if(op.equals("+")){
					System.out.println(a+b);
				} else if(op.equals("-")){
					System.out.println(a-b);
				} else if(op.equals("*")){
					System.out.println(a*b);
				} else if(op.equals("/")){
					System.out.println(a/b);
				} else{
				}
			}
		}
	}
}