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;
public class Main{
	public static void main(String[] args) {
		// 標準入力からデータを読み込む準備
		Scanner sc = new Scanner(System.in);
		// 2つの文字の固まりをそれぞれ整数値と想定して読み込む 
		int area = 0;/* ここを変えて面積を求めよう */
		for(;;){
		int a = sc.nextInt();
		String b = sc.next();
		int c = sc.nextInt();
		if(b.equals("?")){
			break;
		}
		if(b.equals("+")){
			area = a+c;
		}
		if(b.equals("-")){
			area = a-c;
		}
		if(b.equals("*")){
			area = a*c;
		}
		if(b.equals("/")){
			area = a/c;
		}
		System.out.println(area);
		}
		sc.close();
		}
}