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.*;

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