p1152 欢乐的跳

m=input('').split()

n=len(m)-1

lst=[]

sum=0

for i in range(1,n):

	lst.append(i)

for i in range(1,n):

	a=abs(int(m[i])-int(m[i+1]))

	if a in lst:
    		continue
	else:
    		sum+=1
    break

if sum==0:

	print('Jolly')

else: print('Not Jolly')