import java.util.Scanner;

public class Main
{

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

		int a = Integer.parseInt(sc.next());
		sc.next();sc.next();sc.next();
		int e = Integer.parseInt(sc.next());
		int k = Integer.parseInt(sc.next());
		String ans = (e - a > k) ? ":(" :
								   "Yay!";

		System.out.println(ans);
		sc.close();
	}
} import java.util.Scanner; Scanner java.util public class Main
{

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

		int a = Integer.parseInt(sc.next());
		sc.next();sc.next();sc.next();
		int e = Integer.parseInt(sc.next());
		int k = Integer.parseInt(sc.next());
		String ans = (e - a > k) ? ":(" :
								   "Yay!";

		System.out.println(ans);
		sc.close();
	}
} Main public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		sc.next();sc.next();sc.next();
		int e = Integer.parseInt(sc.next());
		int k = Integer.parseInt(sc.next());
		String ans = (e - a > k) ? ":(" :
								   "Yay!";

		System.out.println(ans);
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		sc.next();sc.next();sc.next();
		int e = Integer.parseInt(sc.next());
		int k = Integer.parseInt(sc.next());
		String ans = (e - a > k) ? ":(" :
								   "Yay!";

		System.out.println(ans);
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = Integer.parseInt(sc.next()); a Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc sc.next() sc.next sc sc.next() sc.next sc sc.next() sc.next sc int e = Integer.parseInt(sc.next()); e Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int k = Integer.parseInt(sc.next()); k Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc String ans = (e - a > k) ? ":(" :
								   "Yay!"; ans (e - a > k) ? ":(" :
								   "Yay!" (e - a > k) e - a e a k ":(" "Yay!" System.out.println(ans) System.out.println System.out System System.out ans sc.close() sc.close sc String[] args args public class Main
{

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

		int a = Integer.parseInt(sc.next());
		sc.next();sc.next();sc.next();
		int e = Integer.parseInt(sc.next());
		int k = Integer.parseInt(sc.next());
		String ans = (e - a > k) ? ":(" :
								   "Yay!";

		System.out.println(ans);
		sc.close();
	}
} public class Main
{

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

		int a = Integer.parseInt(sc.next());
		sc.next();sc.next();sc.next();
		int e = Integer.parseInt(sc.next());
		int k = Integer.parseInt(sc.next());
		String ans = (e - a > k) ? ":(" :
								   "Yay!";

		System.out.println(ans);
		sc.close();
	}
} Main
import java.util.Scanner;

public class Main
{

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

		int a = Integer.parseInt(sc.next());
		sc.next();sc.next();sc.next();
		int e = Integer.parseInt(sc.next());
		int k = Integer.parseInt(sc.next());
		String ans = (e - a > k) ? ":(" :
								   "Yay!";

		System.out.println(ans);
		sc.close();
	}
}