Coding question: Given a list of products with prices, and a list of product sales (with possibly-incorrect prices), find the difference between total actual sales and the correct sale amount. Coding question: N athletes will compete in N events. Given data on how fast each athlete can complete each event, find the fastest time they can complete all events (each athlete takes 1 distinct event). System design question: Design and diagram an email campaign scheduling system, including template storage, user data, email scheduling, and email sending.
