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 inp = new Scanner(System.in);

while (true) {
int a = inp.nextInt();
String op = inp.next();
int b = inp.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 "/" :
if (b!=0)
System.out.println(a/b);
break;

}
}
}
}