import java.util.*;
class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println(-sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt()>sc.nextInt()?":(":"Yay!");
    }
} import java.util.*; util.* java class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println(-sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt()>sc.nextInt()?":(":"Yay!");
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println(-sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt()>sc.nextInt()?":(":"Yay!");
    } main {
        Scanner sc = new Scanner(System.in);
        System.out.println(-sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt()>sc.nextInt()?":(":"Yay!");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) System.out.println(-sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt()>sc.nextInt()?":(":"Yay!") System.out.println System.out System System.out -sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt()>sc.nextInt()?":(":"Yay!" -sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt()>sc.nextInt() -sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt() -sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt() -sc.nextInt() sc.nextInt() sc.nextInt sc (sc.nextInt()+sc.nextInt()+sc.nextInt())*0 (sc.nextInt()+sc.nextInt()+sc.nextInt()) sc.nextInt()+sc.nextInt()+sc.nextInt() sc.nextInt() sc.nextInt sc sc.nextInt() sc.nextInt sc sc.nextInt() sc.nextInt sc 0 sc.nextInt() sc.nextInt sc sc.nextInt() sc.nextInt sc ":(" "Yay!" String[] args args
import java.util.*;
class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println(-sc.nextInt()+(sc.nextInt()+sc.nextInt()+sc.nextInt())*0+sc.nextInt()>sc.nextInt()?":(":"Yay!");
    }
}