import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        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 f = sc.nextInt();
 
		if ((e - a) > f){
			System.out.println(":(");
		} else {
			System.out.println("Yay!");
		}
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        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 f = sc.nextInt();
 
		if ((e - a) > f){
			System.out.println(":(");
		} else {
			System.out.println("Yay!");
		}
    }
} Main public static void main(String[] args) throws Exception {
        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 f = sc.nextInt();
 
		if ((e - a) > f){
			System.out.println(":(");
		} else {
			System.out.println("Yay!");
		}
    } 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 f = sc.nextInt();
 
		if ((e - a) > f){
			System.out.println(":(");
		} else {
			System.out.println("Yay!");
		}
    } 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 f = sc.nextInt(); f sc.nextInt() sc.nextInt sc if ((e - a) > f){
			System.out.println(":(");
		} else {
			System.out.println("Yay!");
		} (e - a) > f (e - a) e a f {
			System.out.println(":(");
		} System.out.println(":(") System.out.println System.out System System.out ":(" {
			System.out.println("Yay!");
		} System.out.println("Yay!") System.out.println System.out System System.out "Yay!" String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        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 f = sc.nextInt();
 
		if ((e - a) > f){
			System.out.println(":(");
		} else {
			System.out.println("Yay!");
		}
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        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 f = sc.nextInt();
 
		if ((e - a) > f){
			System.out.println(":(");
		} else {
			System.out.println("Yay!");
		}
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        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 f = sc.nextInt();
 
		if ((e - a) > f){
			System.out.println(":(");
		} else {
			System.out.println("Yay!");
		}
    }
}
