From 6,000 Competitors to Top 3 in 30 Minutes

I finished 3rd out of about 6,000 competitors on a HackerRank challenge in the AI -> Statistics and Machine Learning track, and the final version of my solution came together in roughly 30 minutes. If you enjoy problem solving in this space, welcome - this write-up is for you. Problem link: Matching Questions with their Answers If you are interested in statistics/machine-learning style reasoning problems, this one is a great example: it looks like simple text matching, but it really tests scoring, disambiguation, and robust decision-making under noisy input. What looked easy on paper turned out to be surprisingly tricky in practice: five questions, five shuffled answers, and one paragraph where multiple answers can seem valid. The difference-maker was not a giant algorithm - it was combining a few solid ideas quickly and cleanly. The Problem Input has: one paragraph, five factual questions, five candidate answers in random order. Output must be the correct answer for each question,