Py2838-有趣的跳跃

num = list(map(int, input().split()))
n = num[0]
num = num[1:]
arr = []
if n == 1:
    print("Jolly")
else:
    if len(num) >= n:
        for i in range(n-1):
            arr.append(abs(num[i] - num[i+1]))
        l = list(range(1, n))
        arr.sort()
        if l == arr:
            print("Jolly")
        else:
            print("Not jolly")
    else:
        print("Not jolly")