This interview included two coding tasks: 1. **Currency conversion graph** You are given a set of directed currency exchange rates, for example: - `CAD -> USD = 0.880` - `USD -> JPY = 2000.000` Given a source currency and a target currency, determine whether the target is reachable from the source. If multiple conversion paths exist, return the path with the fewest conversions (minimum number of edges). Also compute the resulting exchange rate along that path by multiplying the rates on the path, and round the final result to three decimal places. 2. **Paginate clinic listings by payer diversity** You are given a pre-sorted list of clinic listing records. Each record contains fields such as `payer_id`, `listing_id`, and `rating`. Split the list into pages of size `x`. Each page should contain as many distinct `payer_id` values as possible. If there are not enough distinct `payer_id` values left to fill the page, use the remaining records to fill the page while preserving the original order as much as possible. Return the paginated result.