# objects = [1, 2, 3, 3, {'4'}, 3, 'Hello', {'4'}, 0]
# checker = set()
#
# for obj in objects:
#     print(id(obj))
#     if id(obj) not in checker:
#         checker.add(id(obj))
#
# print(len(checker)) 

# if __name__ == '__main__':
#     main()
