{"id":"flood-fill-color-as-visited","text":"Flood fill uses the color mutation itself as the visited marker instead of maintaining an explicit `visited` set — once a pixel is recolored, it no longer matches `original` and won't be revisited.","truth_value":"IN","source":"entries/2026/06/06/flood-fill-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"flood-fill-color-as-visited","truth_value":"IN","reason":"premise"}]}}