li=list(map(int,input().split()))
l=[]
h=[i for i in range(1,len(li)-1)]

for i in range(len(li)-1):
    v=abs(li[i]-li[i+1])
    if v not in l:
        l.append(v)
l.sort()
if l==h:
    print("Jolly")
else:
    print("Not jolly")