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 in = new Scanner(System.in);
    
    while (true) {
      int x = in.nextInt();
      char op = in.next().charAt(0);
      if(op == '?') break;
      int y = in.nextInt();
      switch (op) {
        case '+': System.out.println(x + y); break;
        case '-': System.out.println(x - y); break;
        case '*': System.out.println(x * y); break;
        case '/': System.out.println(x / y); break;
      }
    }
  }
}