import java.util.Scanner;

public class EvenNumber {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        int num = Integer.parseInt(scanner.nextLine());

        if (num % 2 != 0) {
            System.out.println("Please write an even number.");
            num = Integer.parseInt(scanner.nextLine());
        } else {
            System.out.printf("The number is: %d",Math.abs(num));
        }

    }
}