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.*;
import java.util.*;

public class Main{
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int a,b;char[] c;
        while(true){
            a=sc.nextInt();c=sc.next().toCharArray();b=sc.nextInt();
            if(c[0]=='?')break;
            if(c[0]=='+')System.out.println(a+b);
            else if(c[0]=='-')System.out.println(a-b);
            else if(c[0]=='*')System.out.println(a*b);
            else System.out.println(a/b);
        }
}
}
