import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // シミュレーション
        Scanner sc = new Scanner(System.in);
        int[] antena = new int[6];
        for (int i = 0; i < 6; i++) {
            antena[i] = sc.nextInt();
        }

        int limit = antena[5];
        boolean isJumming = false;
        for (int i = 0; i < 6; i++) {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        }

        System.out.println(isJumming ? ":(" : "Yay!");
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        // シミュレーション
        Scanner sc = new Scanner(System.in);
        int[] antena = new int[6];
        for (int i = 0; i < 6; i++) {
            antena[i] = sc.nextInt();
        }

        int limit = antena[5];
        boolean isJumming = false;
        for (int i = 0; i < 6; i++) {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        }

        System.out.println(isJumming ? ":(" : "Yay!");
    }
} Main public static void main(String[] args) {
        // シミュレーション
        Scanner sc = new Scanner(System.in);
        int[] antena = new int[6];
        for (int i = 0; i < 6; i++) {
            antena[i] = sc.nextInt();
        }

        int limit = antena[5];
        boolean isJumming = false;
        for (int i = 0; i < 6; i++) {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        }

        System.out.println(isJumming ? ":(" : "Yay!");
    } main {
        // シミュレーション
        Scanner sc = new Scanner(System.in);
        int[] antena = new int[6];
        for (int i = 0; i < 6; i++) {
            antena[i] = sc.nextInt();
        }

        int limit = antena[5];
        boolean isJumming = false;
        for (int i = 0; i < 6; i++) {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        }

        System.out.println(isJumming ? ":(" : "Yay!");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int[] antena = new int[6]; antena new int[6] 6 for (int i = 0; i < 6; i++) {
            antena[i] = sc.nextInt();
        } int i = 0; int i = 0; i 0 i < 6 i 6 i++ i++ i {
            antena[i] = sc.nextInt();
        } {
            antena[i] = sc.nextInt();
        } antena[i] = sc.nextInt() antena[i] antena i sc.nextInt() sc.nextInt sc int limit = antena[5]; limit antena[5] antena 5 boolean isJumming = false; isJumming false for (int i = 0; i < 6; i++) {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        } int i = 0; int i = 0; i 0 i < 6 i 6 i++ i++ i {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        } {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        } for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            } int j = i + 1; int j = i + 1; j i + 1 i 1 j < 6 j 6 j++ j++ j {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            } {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            } if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                } (antena[j] - antena[i]) > limit (antena[j] - antena[i]) antena[j] antena j antena[i] antena i limit {
                    isJumming = true;
                } isJumming = true isJumming true System.out.println(isJumming ? ":(" : "Yay!") System.out.println System.out System System.out isJumming ? ":(" : "Yay!" isJumming ":(" "Yay!" String[] args args public class Main {
    public static void main(String[] args) {
        // シミュレーション
        Scanner sc = new Scanner(System.in);
        int[] antena = new int[6];
        for (int i = 0; i < 6; i++) {
            antena[i] = sc.nextInt();
        }

        int limit = antena[5];
        boolean isJumming = false;
        for (int i = 0; i < 6; i++) {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        }

        System.out.println(isJumming ? ":(" : "Yay!");
    }
} public class Main {
    public static void main(String[] args) {
        // シミュレーション
        Scanner sc = new Scanner(System.in);
        int[] antena = new int[6];
        for (int i = 0; i < 6; i++) {
            antena[i] = sc.nextInt();
        }

        int limit = antena[5];
        boolean isJumming = false;
        for (int i = 0; i < 6; i++) {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        }

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

public class Main {
    public static void main(String[] args) {
        // シミュレーション
        Scanner sc = new Scanner(System.in);
        int[] antena = new int[6];
        for (int i = 0; i < 6; i++) {
            antena[i] = sc.nextInt();
        }

        int limit = antena[5];
        boolean isJumming = false;
        for (int i = 0; i < 6; i++) {
            for (int j = i + 1; j < 6; j++) {
                if ((antena[j] - antena[i]) > limit) {
                    isJumming = true;
                }
            }
        }

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