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.io.*;
class Main{
public static void main(String[] args)throws IOException{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int x=0;
boolean i=true;
while(i){
String str=br.readLine();
String[] arr=str.split(" ");
int a=Integer.parseInt(arr[0]);
int b=Integer.parseInt(arr[2]);
switch(arr[1]){
case "+": x=a+b; break;
case "-": x=a-b; break;
case "*": x=a*b; break;
case "/": x=a/b; break;
case "?": i=false; break;
default: break;
}
if(i==true) System.out.println(x);
}
br.close();
}
}