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.util.*;
import java.io.*;

public class Main {

	public static void main(String[] args) {
		Scanner in=new Scanner(System.in);
		PrintWriter out=new PrintWriter(System.out);
		while(true) {
			int a=in.nextInt();
			String op=in.next();
			if(op.equals("?"))break;
			
			if(op.equals("+")) {
				out.println(a+in.nextInt());
			}
			else if(op.equals("-"))out.println(a-in.nextInt());
			else if(op.equals("*"))out.println(a*in.nextInt());
			else if(op.equals("/"))out.println(a/in.nextInt());
		}
		out.flush();
	}

}

