题目描述
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.
Examples
Input
1
2
4
8
9
15
Output
Yay!
Input
15
18
26
35
36
18
Output
:(
输入格式
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输出格式
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