Leetcode 3018. Maximum Number of Removal Queries That Can Be Processed I

Given an array (or similar structure) and a sequence of removal queries, determine the largest prefix of queries that can be applied while preserving a required feasibility property (e.g., existence of a segment/substructure meeting some constraint). Typical solutions binary-search the answer and simulate removals offline using union-find or segment-tree techniques to maintain components/segment information efficiently.