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.

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.

Constraints

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

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 :(.

见题面 Input 部分

见题面 Output 部分