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 scanner = new Scanner(System.in);
    int a,b;
    String C="Start";
    while(!(C.equals("?"))){
      a = scanner.nextInt();
      C = scanner.next();
      b = scanner.nextInt();
      if(!(C.equals("?"))){
        switch(C){
          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;
        }
      }
    }
  }
}

