import java.util.Scanner;

public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        Integer[] antenna = {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())};
        int range = Integer.parseInt(sc.next());

        boolean result = true;
        for (int i = 0; i < antenna.length - 1; i++) {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        }

        System.out.println(result ? "Yay!" : ":(");
    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        Integer[] antenna = {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())};
        int range = Integer.parseInt(sc.next());

        boolean result = true;
        for (int i = 0; i < antenna.length - 1; i++) {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        }

        System.out.println(result ? "Yay!" : ":(");
    }
} Main public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        Integer[] antenna = {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())};
        int range = Integer.parseInt(sc.next());

        boolean result = true;
        for (int i = 0; i < antenna.length - 1; i++) {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        }

        System.out.println(result ? "Yay!" : ":(");
    } main {

        Scanner sc = new Scanner(System.in);
        Integer[] antenna = {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())};
        int range = Integer.parseInt(sc.next());

        boolean result = true;
        for (int i = 0; i < antenna.length - 1; i++) {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        }

        System.out.println(result ? "Yay!" : ":(");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) Integer[] antenna = {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())}; antenna {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())} Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int range = Integer.parseInt(sc.next()); range Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc boolean result = true; result true for (int i = 0; i < antenna.length - 1; i++) {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        } int i = 0; int i = 0; i 0 i < antenna.length - 1 i antenna.length - 1 antenna.length antenna antenna.length 1 i++ i++ i {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        } {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        } for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            } int j = i + 1; int j = i + 1; j i + 1 i 1 j < antenna.length j antenna.length antenna antenna.length j++ j++ j {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            } {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            } if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                } Math.abs(antenna[i] - antenna[j]) > range Math.abs(antenna[i] - antenna[j]) Math.abs Math antenna[i] - antenna[j] antenna[i] antenna i antenna[j] antenna j range {
                    result = false;
                } result = false result false System.out.println(result ? "Yay!" : ":(") System.out.println System.out System System.out result ? "Yay!" : ":(" result "Yay!" ":(" String args[] args public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        Integer[] antenna = {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())};
        int range = Integer.parseInt(sc.next());

        boolean result = true;
        for (int i = 0; i < antenna.length - 1; i++) {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        }

        System.out.println(result ? "Yay!" : ":(");
    }
} public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        Integer[] antenna = {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())};
        int range = Integer.parseInt(sc.next());

        boolean result = true;
        for (int i = 0; i < antenna.length - 1; i++) {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        }

        System.out.println(result ? "Yay!" : ":(");
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String args[]) {

        Scanner sc = new Scanner(System.in);
        Integer[] antenna = {Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next()),
                Integer.parseInt(sc.next())};
        int range = Integer.parseInt(sc.next());

        boolean result = true;
        for (int i = 0; i < antenna.length - 1; i++) {
            for (int j = i + 1; j < antenna.length; j++) {
                if (Math.abs(antenna[i] - antenna[j]) > range) {
                    result = false;
                }
            }
        }

        System.out.println(result ? "Yay!" : ":(");
    }
}