seq_diff = lambda arr: [abs(b - a) for a, b in zip(arr, arr[1:])]

is_jolly = lambda arr: set(seq_diff(sorted(seq_diff(arr)))) == {1}

def jollies(inputs):
    for line in inputs.splitlines():
        arr = map(int, line.split())[1:]
        print '{} {}JOLLY'.format(line, 'NOT ' * (not is_jolly(arr)))

jollies('''\
4 1 4 2 3
5 1 4 2 -1 6
4 19 22 24 21
4 19 22 24 25
4 2 -1 0 2''')