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.

1
2
4
8
9
15

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!.

15
18
26
35
36
18

:(

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 :(.