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;
public 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;
      }
    }
    sc.close();
  }
}