import java.util.Scanner;
import java.lang.Math;

class Main {
    public static void main(String[] args) {
        // input
        Scanner scanner = new Scanner(System.in);
        int[] a=new int[5];
        for (int i = 0; i < 5; i++) {
            a[i] = Integer.parseInt(scanner.next());
        }
        int k = Integer.parseInt(scanner.next());
        scanner.close();
        //solve
        String message;
        if (Math.abs(a[0] - a[4]) <= k) {
            message="Yay!";
        } else {
            message=":(";
        }
        // output
        System.out.println(message);
        System.out.flush();
    }
} import java.util.Scanner; Scanner java.util import java.lang.Math; Math java.lang class Main {
    public static void main(String[] args) {
        // input
        Scanner scanner = new Scanner(System.in);
        int[] a=new int[5];
        for (int i = 0; i < 5; i++) {
            a[i] = Integer.parseInt(scanner.next());
        }
        int k = Integer.parseInt(scanner.next());
        scanner.close();
        //solve
        String message;
        if (Math.abs(a[0] - a[4]) <= k) {
            message="Yay!";
        } else {
            message=":(";
        }
        // output
        System.out.println(message);
        System.out.flush();
    }
} Main public static void main(String[] args) {
        // input
        Scanner scanner = new Scanner(System.in);
        int[] a=new int[5];
        for (int i = 0; i < 5; i++) {
            a[i] = Integer.parseInt(scanner.next());
        }
        int k = Integer.parseInt(scanner.next());
        scanner.close();
        //solve
        String message;
        if (Math.abs(a[0] - a[4]) <= k) {
            message="Yay!";
        } else {
            message=":(";
        }
        // output
        System.out.println(message);
        System.out.flush();
    } main {
        // input
        Scanner scanner = new Scanner(System.in);
        int[] a=new int[5];
        for (int i = 0; i < 5; i++) {
            a[i] = Integer.parseInt(scanner.next());
        }
        int k = Integer.parseInt(scanner.next());
        scanner.close();
        //solve
        String message;
        if (Math.abs(a[0] - a[4]) <= k) {
            message="Yay!";
        } else {
            message=":(";
        }
        // output
        System.out.println(message);
        System.out.flush();
    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) int[] a=new int[5]; a new int[5] 5 for (int i = 0; i < 5; i++) {
            a[i] = Integer.parseInt(scanner.next());
        } int i = 0; int i = 0; i 0 i < 5 i 5 i++ i++ i {
            a[i] = Integer.parseInt(scanner.next());
        } {
            a[i] = Integer.parseInt(scanner.next());
        } a[i] = Integer.parseInt(scanner.next()) a[i] a i Integer.parseInt(scanner.next()) Integer.parseInt Integer scanner.next() scanner.next scanner int k = Integer.parseInt(scanner.next()); k Integer.parseInt(scanner.next()) Integer.parseInt Integer scanner.next() scanner.next scanner scanner.close() scanner.close scanner String message; message if (Math.abs(a[0] - a[4]) <= k) {
            message="Yay!";
        } else {
            message=":(";
        } Math.abs(a[0] - a[4]) <= k Math.abs(a[0] - a[4]) Math.abs Math a[0] - a[4] a[0] a 0 a[4] a 4 k {
            message="Yay!";
        } message="Yay!" message "Yay!" {
            message=":(";
        } message=":(" message ":(" System.out.println(message) System.out.println System.out System System.out message System.out.flush() System.out.flush System.out System System.out String[] args args
import java.util.Scanner;
import java.lang.Math;

class Main {
    public static void main(String[] args) {
        // input
        Scanner scanner = new Scanner(System.in);
        int[] a=new int[5];
        for (int i = 0; i < 5; i++) {
            a[i] = Integer.parseInt(scanner.next());
        }
        int k = Integer.parseInt(scanner.next());
        scanner.close();
        //solve
        String message;
        if (Math.abs(a[0] - a[4]) <= k) {
            message="Yay!";
        } else {
            message=":(";
        }
        // output
        System.out.println(message);
        System.out.flush();
    }
}