Carefully review and analyze the code in implementation1.txt, implementation2.txt, and implementation3.txt in detail, and think more deeply about the following items:
- Which implementation is better for the given user story defined in <story_file> in terms of functionality, code quality, performance, modularity, test coverage, etc.? Explain your reasoning.
- Which implementation fully complies with the user story defined in <story_file>? Identify the discrepancies in the implementation(s) that do not comply.