import java.util.Scanner;

class Main {
	public static void main(String[] args) {
	
		Scanner stdIn = new Scanner(System.in);
		int[] cod = new int[5];
		int[] dist = new int[10];
		
		for (int i = 0; i < 5; i++) {
			cod[i] = stdIn.nextInt();
		}
		int k = stdIn.nextInt();
		
		dist[0] = cod[0] - cod[1];
		dist[1] = cod[0] - cod[2];
		dist[2] = cod[0] - cod[3];
		dist[3] = cod[0] - cod[4];
		dist[4] = cod[1] - cod[2];
		dist[5] = cod[1] - cod[3];
		dist[6] = cod[1] - cod[4];
		dist[7] = cod[2] - cod[3];
		dist[8] = cod[2] - cod[4];
		dist[9] = cod[3] - cod[4];
		
		for (int i = 0; i < 10; i++) {
			if (dist[i] < 0) {
				dist[i] *= -1;
			}
			if (dist[i] > k) {
				System.out.println(":(");
				return;
			}
		}
		
		System.out.println("Yay!");
	
	}
} import java.util.Scanner; Scanner java.util class Main {
	public static void main(String[] args) {
	
		Scanner stdIn = new Scanner(System.in);
		int[] cod = new int[5];
		int[] dist = new int[10];
		
		for (int i = 0; i < 5; i++) {
			cod[i] = stdIn.nextInt();
		}
		int k = stdIn.nextInt();
		
		dist[0] = cod[0] - cod[1];
		dist[1] = cod[0] - cod[2];
		dist[2] = cod[0] - cod[3];
		dist[3] = cod[0] - cod[4];
		dist[4] = cod[1] - cod[2];
		dist[5] = cod[1] - cod[3];
		dist[6] = cod[1] - cod[4];
		dist[7] = cod[2] - cod[3];
		dist[8] = cod[2] - cod[4];
		dist[9] = cod[3] - cod[4];
		
		for (int i = 0; i < 10; i++) {
			if (dist[i] < 0) {
				dist[i] *= -1;
			}
			if (dist[i] > k) {
				System.out.println(":(");
				return;
			}
		}
		
		System.out.println("Yay!");
	
	}
} Main public static void main(String[] args) {
	
		Scanner stdIn = new Scanner(System.in);
		int[] cod = new int[5];
		int[] dist = new int[10];
		
		for (int i = 0; i < 5; i++) {
			cod[i] = stdIn.nextInt();
		}
		int k = stdIn.nextInt();
		
		dist[0] = cod[0] - cod[1];
		dist[1] = cod[0] - cod[2];
		dist[2] = cod[0] - cod[3];
		dist[3] = cod[0] - cod[4];
		dist[4] = cod[1] - cod[2];
		dist[5] = cod[1] - cod[3];
		dist[6] = cod[1] - cod[4];
		dist[7] = cod[2] - cod[3];
		dist[8] = cod[2] - cod[4];
		dist[9] = cod[3] - cod[4];
		
		for (int i = 0; i < 10; i++) {
			if (dist[i] < 0) {
				dist[i] *= -1;
			}
			if (dist[i] > k) {
				System.out.println(":(");
				return;
			}
		}
		
		System.out.println("Yay!");
	
	} main {
	
		Scanner stdIn = new Scanner(System.in);
		int[] cod = new int[5];
		int[] dist = new int[10];
		
		for (int i = 0; i < 5; i++) {
			cod[i] = stdIn.nextInt();
		}
		int k = stdIn.nextInt();
		
		dist[0] = cod[0] - cod[1];
		dist[1] = cod[0] - cod[2];
		dist[2] = cod[0] - cod[3];
		dist[3] = cod[0] - cod[4];
		dist[4] = cod[1] - cod[2];
		dist[5] = cod[1] - cod[3];
		dist[6] = cod[1] - cod[4];
		dist[7] = cod[2] - cod[3];
		dist[8] = cod[2] - cod[4];
		dist[9] = cod[3] - cod[4];
		
		for (int i = 0; i < 10; i++) {
			if (dist[i] < 0) {
				dist[i] *= -1;
			}
			if (dist[i] > k) {
				System.out.println(":(");
				return;
			}
		}
		
		System.out.println("Yay!");
	
	} Scanner stdIn = new Scanner(System.in); stdIn new Scanner(System.in) int[] cod = new int[5]; cod new int[5] 5 int[] dist = new int[10]; dist new int[10] 10 for (int i = 0; i < 5; i++) {
			cod[i] = stdIn.nextInt();
		} int i = 0; int i = 0; i 0 i < 5 i 5 i++ i++ i {
			cod[i] = stdIn.nextInt();
		} {
			cod[i] = stdIn.nextInt();
		} cod[i] = stdIn.nextInt() cod[i] cod i stdIn.nextInt() stdIn.nextInt stdIn int k = stdIn.nextInt(); k stdIn.nextInt() stdIn.nextInt stdIn dist[0] = cod[0] - cod[1] dist[0] dist 0 cod[0] - cod[1] cod[0] cod 0 cod[1] cod 1 dist[1] = cod[0] - cod[2] dist[1] dist 1 cod[0] - cod[2] cod[0] cod 0 cod[2] cod 2 dist[2] = cod[0] - cod[3] dist[2] dist 2 cod[0] - cod[3] cod[0] cod 0 cod[3] cod 3 dist[3] = cod[0] - cod[4] dist[3] dist 3 cod[0] - cod[4] cod[0] cod 0 cod[4] cod 4 dist[4] = cod[1] - cod[2] dist[4] dist 4 cod[1] - cod[2] cod[1] cod 1 cod[2] cod 2 dist[5] = cod[1] - cod[3] dist[5] dist 5 cod[1] - cod[3] cod[1] cod 1 cod[3] cod 3 dist[6] = cod[1] - cod[4] dist[6] dist 6 cod[1] - cod[4] cod[1] cod 1 cod[4] cod 4 dist[7] = cod[2] - cod[3] dist[7] dist 7 cod[2] - cod[3] cod[2] cod 2 cod[3] cod 3 dist[8] = cod[2] - cod[4] dist[8] dist 8 cod[2] - cod[4] cod[2] cod 2 cod[4] cod 4 dist[9] = cod[3] - cod[4] dist[9] dist 9 cod[3] - cod[4] cod[3] cod 3 cod[4] cod 4 for (int i = 0; i < 10; i++) {
			if (dist[i] < 0) {
				dist[i] *= -1;
			}
			if (dist[i] > k) {
				System.out.println(":(");
				return;
			}
		} int i = 0; int i = 0; i 0 i < 10 i 10 i++ i++ i {
			if (dist[i] < 0) {
				dist[i] *= -1;
			}
			if (dist[i] > k) {
				System.out.println(":(");
				return;
			}
		} {
			if (dist[i] < 0) {
				dist[i] *= -1;
			}
			if (dist[i] > k) {
				System.out.println(":(");
				return;
			}
		} if (dist[i] < 0) {
				dist[i] *= -1;
			} dist[i] < 0 dist[i] dist i 0 {
				dist[i] *= -1;
			} dist[i] *= -1 dist[i] dist i -1 1 if (dist[i] > k) {
				System.out.println(":(");
				return;
			} dist[i] > k dist[i] dist i k {
				System.out.println(":(");
				return;
			} System.out.println(":(") System.out.println System.out System System.out ":(" return; System.out.println("Yay!") System.out.println System.out System System.out "Yay!" String[] args args
import java.util.Scanner;

class Main {
	public static void main(String[] args) {
	
		Scanner stdIn = new Scanner(System.in);
		int[] cod = new int[5];
		int[] dist = new int[10];
		
		for (int i = 0; i < 5; i++) {
			cod[i] = stdIn.nextInt();
		}
		int k = stdIn.nextInt();
		
		dist[0] = cod[0] - cod[1];
		dist[1] = cod[0] - cod[2];
		dist[2] = cod[0] - cod[3];
		dist[3] = cod[0] - cod[4];
		dist[4] = cod[1] - cod[2];
		dist[5] = cod[1] - cod[3];
		dist[6] = cod[1] - cod[4];
		dist[7] = cod[2] - cod[3];
		dist[8] = cod[2] - cod[4];
		dist[9] = cod[3] - cod[4];
		
		for (int i = 0; i < 10; i++) {
			if (dist[i] < 0) {
				dist[i] *= -1;
			}
			if (dist[i] > k) {
				System.out.println(":(");
				return;
			}
		}
		
		System.out.println("Yay!");
	
	}
}