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;
class Main
 {
   public static void main(String[] args)
      {
      Scanner sc = new Scanner(System.in);
      while(true){
      int a = sc.nextInt();
      char op = sc.next().charAt(0);
      int b = sc.nextInt();
      int ans = 0;
      if(op == '+')ans = a + b;
      if(op == '-')ans = a - b;
      if(op == '*')ans = a * b;
      if(op == '/')ans = a / b;
      if(op == '?')break;
      System.out.println(ans);
                  }
      }
 }
