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')