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 is given from Standard Input in the following format:

```
$a$
$b$
$c$
$d$
$e$
$k$
```

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

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

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!.

:(

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 :(.