Leetcode 2753. Count Houses in a Circular Street II

Count the number of valid ways to choose or label houses arranged in a circle subject to local constraints (for example, restrictions on adjacent selections or coverage), where wrap-around adjacency makes the cycle nontrivial. Designing an efficient solution requires cycle-aware dynamic programming, combinatorics/inclusion–exclusion or matrix exponentiation and careful handling of large n and modular arithmetic.

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Leetcode 2753. Count Houses in a Circular Street II

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