a = int(eval(input()))

_ = int(eval(input()))

_ = int(eval(input()))

_ = int(eval(input()))

e = int(eval(input()))

k = int(eval(input()))



if e - a <= k:

  print("Yay!")

else:

  print(":(")



a = int(eval(input()))

d = int(eval(input()))

f = int(eval(input()))

h = int(eval(input()))

e = int(eval(input()))

k = int(eval(input()))



if e - a <= k:

  print("Yay!")

else:

  print(":(")



a = int(eval(input()))
_ = int(eval(input()))
_ = int(eval(input()))
_ = int(eval(input()))
e = int(eval(input()))
k = int(eval(input()))
if e - a <= k:
    print("Yay!")
else:
    print(":(")

a = int(eval(input()))
d = int(eval(input()))
f = int(eval(input()))
h = int(eval(input()))
e = int(eval(input()))
k = int(eval(input()))
if e - a <= k:
    print("Yay!")
else:
    print(":(")

-_ = int(eval(input())) -_ = int(eval(input())) -_ = int(eval(input())) +d = int(eval(input())) +f = int(eval(input())) +h = int(eval(input()))