import java.util.Scanner;
public class Main{
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
while(scan.hasNextInt()) {
Integer num = scan.nextInt();
if(num.intValue() % 2 == 1) {//注意integer转int
System.out.println("Odd");
} else {
System.out.println("Even");
}
}
}
}