The post describes two separate coding questions from an online assessment: 1. **Greedy deletion by minimum value** Given an integer array `nums`, repeatedly perform the following operation until every element has been deleted: - Among all undeleted elements, choose the one with the smallest value. If multiple elements have the same value, choose the leftmost one. - Add its value to the answer. - Delete that element and its immediate neighbors in the original array (`i - 1` and `i + 1`) if those neighbors have not already been deleted. Return the final accumulated answer. 2. **Minimum emergency refill days** You manage a warehouse with capacity `max_products` and initial inventory `0`. On day `i`, the inventory changes by `task[i]` at the end of the day. Before processing a day, you may perform an emergency refill and increase the inventory by any amount, as long as the inventory after the refill does not exceed `max_products`. Using a refill on a day counts as one refill day regardless of how much inventory you add. Constraints: - After each day, inventory must never exceed `max_products`. - On days where `task[i] == 0`, the end-of-day inventory must be non-negative. - On other days, negative inventory is temporarily allowed. Return the minimum number of refill days needed to satisfy all constraints, or `-1` if no valid plan exists.