백준 #20673번 Covid-19

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int p = sc.nextInt();
		int q = sc.nextInt();
		
		if(p <= 50 && q <= 10) {
			System.out.println("White");
		}else if(q > 30) {
			System.out.println("Red");
		}else {
			System.out.println("Yellow");
		}
		sc.close();
	}
}