import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int d = sc.nextInt();
        int e = sc.nextInt();
        int k = sc.nextInt();
        if (Math.abs(a - e) <= k) {
            System.out.println("Yay!");
            return;
        }
        System.out.println(":(");
    }

} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int d = sc.nextInt();
        int e = sc.nextInt();
        int k = sc.nextInt();
        if (Math.abs(a - e) <= k) {
            System.out.println("Yay!");
            return;
        }
        System.out.println(":(");
    }

} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int d = sc.nextInt();
        int e = sc.nextInt();
        int k = sc.nextInt();
        if (Math.abs(a - e) <= k) {
            System.out.println("Yay!");
            return;
        }
        System.out.println(":(");
    } main {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int d = sc.nextInt();
        int e = sc.nextInt();
        int k = sc.nextInt();
        if (Math.abs(a - e) <= k) {
            System.out.println("Yay!");
            return;
        }
        System.out.println(":(");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc int d = sc.nextInt(); d sc.nextInt() sc.nextInt sc int e = sc.nextInt(); e sc.nextInt() sc.nextInt sc int k = sc.nextInt(); k sc.nextInt() sc.nextInt sc if (Math.abs(a - e) <= k) {
            System.out.println("Yay!");
            return;
        } Math.abs(a - e) <= k Math.abs(a - e) Math.abs Math a - e a e k {
            System.out.println("Yay!");
            return;
        } System.out.println("Yay!") System.out.println System.out System System.out "Yay!" return; System.out.println(":(") System.out.println System.out System System.out ":(" String[] args args public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int d = sc.nextInt();
        int e = sc.nextInt();
        int k = sc.nextInt();
        if (Math.abs(a - e) <= k) {
            System.out.println("Yay!");
            return;
        }
        System.out.println(":(");
    }

} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int d = sc.nextInt();
        int e = sc.nextInt();
        int k = sc.nextInt();
        if (Math.abs(a - e) <= k) {
            System.out.println("Yay!");
            return;
        }
        System.out.println(":(");
    }

} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        int d = sc.nextInt();
        int e = sc.nextInt();
        int k = sc.nextInt();
        if (Math.abs(a - e) <= k) {
            System.out.println("Yay!");
            return;
        }
        System.out.println(":(");
    }

}
