lst = list(input().split())
n = len(lst)
x = []
for i in range(1, n, 1):
    x.append(i)
j = 1
lst2 = []
while j <= n - 1:
    a = lst[j]
    a = int(a)
    b = lst[j - 1]
    b = int(b)
    c = a - b
    if c > 0:
        lst2.append(c)
    else:
        lst2.append(-c)
    j += 1
f = 1
for i in x:
    if i in lst2:
        f = f * 1
    else:
        f = f * 0
if f == 1:
    print("Jolly")
else:
    print("Not jolly")