a = input()

a_=a.split()

ls = []

for z in a_:

	ls.append(int(z))

ls1 = []

ls2 = []

for i in range(0,len(ls)-1):

	ls1.append(abs(ls[i]-ls[i+1]))

for j in range(1,len(ls)):

	ls2.append(j)

flag = True

for k in range(len(ls)-1):

	if ls1[k] in ls2:
		pass
	else:
		flag = False
		print("Not jolly")
		break

if flag == True:

	 print('Jolly')