lst = list(input().split()) n = len(lst) x = [] for i in range(1, n, 1): x.append(i) j = 1 lst2 = [] while j <= n - 1: a = lst[j] a = int(a) b = lst[j - 1] b = int(b) c = a - b if c > 0: lst2.append(c) else: lst2.append(-c) j += 1 f = 1 for i in x: if i in lst2: f = f * 1 else: f = f * 0 if f == 1: print("Jolly") else: print("Not jolly")