a,*_,e,k=eval('int(input()),'*6);print(('Y:a(y !'[e-a>k::2]))
a,*_,e,k=list(map(int,open(0)));print(('Y:a(y !'[e-a>k::2]))
a, *_, e, k = eval("int(input())," * 6)
print(("Y:a(y !"[e - a > k :: 2]))

a, *_, e, k = list(map(int, open(0)))
print(("Y:a(y !"[e - a > k :: 2]))

-a, *_, e, k = eval("int(input())," * 6) +a, *_, e, k = list(map(int, open(0)))