KYC / Compliance Pipeline (Multi-part Implementation)

Problem: KYC Compliance Validation Pipeline (Multi-part Implementation) Using the interview question page provided (hack2hire Stripe coding question link), implement a multi-stage processing task related to KYC (Know Your Customer) compliance checks. The problem is typically split into multiple parts (e.g., Part 1–4). Each part is relatively independent and adds incremental requirements. The interview mainly evaluates implementation speed and attention to details. Note: The original post does not include the full prompt nor I/O specs. Please refer to the linked problem statement for exact requirements. Requirements Read input according to the format specified on the problem page. Output results exactly as required by the prompt. For Part 4, the interviewer mentioned you may not need to finish everything; prioritize completing the core subtask(s) as specified.