Problem:
﻿Score: 100 points

Problem Statement

In AtCoder city, there are five antennas standing in a straight line. They are called Antenna A, B, C, D and E from west to east, and their coordinates are a, b, c, d and e, respectively.

Two antennas can communicate directly if the distance between them is k or less, and they cannot if the distance is greater than k.

Determine if there exists a pair of antennas that cannot communicate directly.

Here, assume that the distance between two antennas at coordinates p and q (p < q) is q - p.

Constraints

a, b, c, d, e and k are integers between 0 and 123 (inclusive).

a < b < c < d < e

Input

Input is given from Standard Input in the following format:

a
b
c
d
e
k

Output

Print :( if there exists a pair of antennas that cannot communicate directly, and print Yay! if there is no such pair.

Sample Input 1

1
2
4
8
9
15

Sample Output 1

Yay!

In this case, there is no pair of antennas that cannot communicate directly, because:

the distance between A and B is 2 - 1 = 1

the distance between A and C is 4 - 1 = 3

the distance between A and D is 8 - 1 = 7

the distance between A and E is 9 - 1 = 8

the distance between B and C is 4 - 2 = 2

the distance between B and D is 8 - 2 = 6

the distance between B and E is 9 - 2 = 7

the distance between C and D is 8 - 4 = 4

the distance between C and E is 9 - 4 = 5

the distance between D and E is 9 - 8 = 1

and none of them is greater than 15. Thus, the correct output is Yay!.

Sample Input 2

15
18
26
35
36
18

Sample Output 2

:(

In this case, the distance between antennas A and D is 35 - 15 = 20 and exceeds 18, so they cannot communicate directly.
Thus, the correct output is :(.

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.Scanner;

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 k = sc.nextInt();

		int x[] = new int[10];

		x[0] = Math.abs(a-b);
		x[1] = Math.abs(a-c);
		x[2] = Math.abs(a-d);
		x[3] = Math.abs(a-e);
		x[4] = Math.abs(b-c);
		x[5] = Math.abs(b-d);
		x[6] = Math.abs(b-e);
		x[7] = Math.abs(c-d);
		x[8] = Math.abs(c-e);
		x[9] = Math.abs(d-e);

		for (int i = 0; i < x.length; i++) {
			if (x[i] >= k) {
				System.out.println(":(");
				return;
			}
		}
		System.out.println("Yay!");
	}
}