fruits = {'사과', '오렌지', '포도'}
print('사과' in fruits)
print('키위' not in fruits)
print()

one = {1, 3, 5, 7, 8}
two = {1, 3, 5, 6, 8}
print('one | two =', one|two)
print('one & two =', one&two)
print('one - two =', one-two)
print('one ^ two =', one^two)
print()

one = {1,3,5,8}
two = {1,3,5,8}
print('one <= two :', one <= two)
print('one < two :', one < two)
print('one >= two :', one >= two)
print('one > two :', one > two)
