{"id":"fancy-string-lookback-two","text":"The make-fancy-string skip decision depends only on the last two characters of the result list, making it a fixed-window greedy algorithm with O(n) time.","truth_value":"IN","source":"entries/2026/06/06/delete-characters-to-make-fancy-string-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"fancy-string-lookback-two","truth_value":"IN","reason":"premise"}]}}