Leetcode 820. Short Encoding of Words

Given a list of words, compute the minimum length of a '#'‑terminated reference string that encodes them by noting you can omit any word that is a suffix of another; the result is the sum of lengths of words that are not suffixes of any other word plus one '#' per such word. This reduces to identifying and keeping only words that aren't suffixes of any other word (e.g., via reversed-trie or set-based suffix elimination).