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.io.CharArrayReader;
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();
    char c = op.charAt(0);
    if(c == '+'){
      System.out.println(a + b);
    }else if(c == '-'){
      System.out.println(a - b);
    }else if(c == '*'){
      System.out.println(a * b);
    }else if(c == '/'){
      System.out.println(a / b);
    }else if(c == '?'){
      break;
    }
  }
  }
}