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.Scanner;

class Main {

	public static void main(String[] args) {
		Scanner cin=new Scanner(System.in);
		while(true){
			String str=cin.nextLine();
			String data[]=str.split(" ");
			int a=Integer.parseInt(data[0]),b=Integer.parseInt(data[2]),res=0;
			char op[]=data[1].toCharArray();
		
			if(op[0]=='?')break;
			if(op[0]=='+')res=a+b;
			if(op[0]=='*')res=a*b;
			if(op[0]=='-')res=a-b;
			if(op[0]=='/')res=a/b;
		
			System.out.println(res);
		}
	}

}

