我感觉样例错了

4 1 4 2 3

4 1 4 2 3
 3 3 2 1

# python3
l = list(map(int, input().split()))
al = [];a = []
happy = True

for i in range(1,len(l),1):
   al.append(abs(l[i - 1] - l[i]))
   a.append(i)
al = sorted(al)

for i in range(0,len(l),1):
   if al != a:
       happy = False
       break
if happy: print("Jolly")
else: print("Not jolly")

∴错了

为啥