import java.util.Scanner;


public class Main {

    public static void main(String[] args) {

     Scanner sc = new Scanner(System.in);
     String ch = sc.nextLine();
     String number = sc.nextLine();

     char label = ch.charAt(0);
     int rank = Integer.parseInt(number) ;

     if ((label == 'a' || label == 'c' || label == 'e' || label == 'g') && (rank == 1 || rank == 3 || rank == 5 || rank == 7)) {
         System.out.println("dark");
        }
     else {
         System.out.println("light");
     }

    }
}