a = list(map(int, input().split()))
a=[int(i) for i in a]
c=[]
for j in range(len(a)-1):
    b=abs(a[j+1]-a[j])
    c.append(b)
    c=list(set(c))
d=a[:-1]
d=list(set(d))
o=c.sort()
p=d.sort()
if o==p:
    print("Jolly")
else:
    print("Not jolly")