import java.util.Scanner;

class Main {
  public static void main(String[] args) {
    Scanner stdIn = new Scanner(System.in);
    int x[] = new int[5];
    for(int i = 0; i < 5; i++) {
      x[i] = stdIn.nextInt();
    }
    int k = stdIn.nextInt();

    int flag = 1;
    for(int i = 0; i < 4; i++) {
      for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      }
    }

    if(flag == 0) {
      System.out.println(":(");
    }else {
      System.out.println("Yay!");
    }
  }
} import java.util.Scanner; Scanner java.util class Main {
  public static void main(String[] args) {
    Scanner stdIn = new Scanner(System.in);
    int x[] = new int[5];
    for(int i = 0; i < 5; i++) {
      x[i] = stdIn.nextInt();
    }
    int k = stdIn.nextInt();

    int flag = 1;
    for(int i = 0; i < 4; i++) {
      for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      }
    }

    if(flag == 0) {
      System.out.println(":(");
    }else {
      System.out.println("Yay!");
    }
  }
} Main public static void main(String[] args) {
    Scanner stdIn = new Scanner(System.in);
    int x[] = new int[5];
    for(int i = 0; i < 5; i++) {
      x[i] = stdIn.nextInt();
    }
    int k = stdIn.nextInt();

    int flag = 1;
    for(int i = 0; i < 4; i++) {
      for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      }
    }

    if(flag == 0) {
      System.out.println(":(");
    }else {
      System.out.println("Yay!");
    }
  } main {
    Scanner stdIn = new Scanner(System.in);
    int x[] = new int[5];
    for(int i = 0; i < 5; i++) {
      x[i] = stdIn.nextInt();
    }
    int k = stdIn.nextInt();

    int flag = 1;
    for(int i = 0; i < 4; i++) {
      for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      }
    }

    if(flag == 0) {
      System.out.println(":(");
    }else {
      System.out.println("Yay!");
    }
  } Scanner stdIn = new Scanner(System.in); stdIn new Scanner(System.in) int x[] = new int[5]; x new int[5] 5 for(int i = 0; i < 5; i++) {
      x[i] = stdIn.nextInt();
    } int i = 0; int i = 0; i 0 i < 5 i 5 i++ i++ i {
      x[i] = stdIn.nextInt();
    } {
      x[i] = stdIn.nextInt();
    } x[i] = stdIn.nextInt() x[i] x i stdIn.nextInt() stdIn.nextInt stdIn int k = stdIn.nextInt(); k stdIn.nextInt() stdIn.nextInt stdIn int flag = 1; flag 1 for(int i = 0; i < 4; i++) {
      for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      }
    } int i = 0; int i = 0; i 0 i < 4 i 4 i++ i++ i {
      for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      }
    } {
      for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      }
    } for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      } int j = i+1; int j = i+1; j i+1 i 1 j < 5 j 5 j++ j++ j {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      } {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      } int d = x[i] - x[j]; d x[i] - x[j] x[i] x i x[j] x j if(Math.abs(d) > k) {flag = 0; break;} Math.abs(d) > k Math.abs(d) Math.abs Math d k {flag = 0; break;} flag = 0 flag 0 break; if(flag == 0) {
      System.out.println(":(");
    }else {
      System.out.println("Yay!");
    } flag == 0 flag 0 {
      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
import java.util.Scanner;

class Main {
  public static void main(String[] args) {
    Scanner stdIn = new Scanner(System.in);
    int x[] = new int[5];
    for(int i = 0; i < 5; i++) {
      x[i] = stdIn.nextInt();
    }
    int k = stdIn.nextInt();

    int flag = 1;
    for(int i = 0; i < 4; i++) {
      for(int j = i+1; j < 5; j++) {
          int d = x[i] - x[j];
          if(Math.abs(d) > k) {flag = 0; break;}
      }
    }

    if(flag == 0) {
      System.out.println(":(");
    }else {
      System.out.println("Yay!");
    }
  }
}