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Leetcode 2612. Minimum Reverse Operations
Given an array of length n with a single 1 at p and some banned positions, compute for each index the minimum number of fixed-size (k) subarray reversals needed to move the 1 there (or -1 if impossible). This reduces to finding shortest paths in an implicit graph of indices (edges = positions reachable by one valid k-length reversal) under the constraint n ≤ 1e5, requiring BFS-style exploration with efficient range management.
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