{"id":"getlucky-first-sum-on-string","text":"`getLucky` computes the first digit-sum directly from the concatenated numeric string, avoiding conversion to a potentially thousands-of-digits integer; subsequent sums operate on small integers.","truth_value":"IN","source":"entries/2026/06/06/sum-of-digits-of-string-after-convert-solution.md","source_url":"","source_hash":"","justifications":[],"dependents":["digit-operations-handle-all-nonneg-inputs"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"getlucky-first-sum-on-string","truth_value":"IN","reason":"premise"}]}}