// editor3
import java.util.*;
public class Main
{
    public static void main(String[]args){
        Scanner sc = new Scanner(System.in);
        if(!sc.hasNextInt()){
            System.out.printlnm("Invalid input");
            return;
        }
        int a = sc.nextInt();
        if(a%2==0){
            System.out.println("Odd");
        }
        else{
            System.out.println("Even");
        }
    }
}