{"id":"banned-set-conversion-for-o1-lookup","text":"`mostCommonWord` converts the `banned` list to a `set` before filtering, ensuring O(1) amortized membership checks during the counting pass.","truth_value":"IN","source":"entries/2026/06/06/most-common-word-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"banned-set-conversion-for-o1-lookup","truth_value":"IN","reason":"premise"}]}}