{"id":"jewels-stones-duplicate-safe","text":"Duplicate characters in `jewels` are silently handled by set deduplication without affecting correctness, since the problem only asks about membership, not frequency.","truth_value":"IN","source":"entries/2026/06/06/jewels-and-stones-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"jewels-stones-duplicate-safe","truth_value":"IN","reason":"premise"}]}}