{"id":"short-string-returns-zero-naturally","text":"Strings shorter than 3 characters produce an empty `range(len(s) - 2)`, so `countGoodSubstrings` returns 0 without any special-case code","truth_value":"IN","source":"entries/2026/06/06/substrings-of-size-three-with-distinct-characters-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"short-string-returns-zero-naturally","truth_value":"IN","reason":"premise"}]}}