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);
  while(true) {
   int a = sc.nextInt();
   String op = sc.next();
   int b = sc.nextInt();
   if(op.equals("?")) break;
   switch(op) {
    case "+":
      System.out.println( a + b);
      break;
    case "-":
      System.out.println( a - b);
      break;
    case "/":
      System.out.println( a / b);
      break;
    case "*":
      System.out.println( a * b);
      break;
}
  }
 }
}