{
  "good": [4463, 4465, 4466, 4467, 4468, 4469, 4470, 4471, 4474, 4475, 4476, 4482, 4484, 4485, 4487, 4488, 4489, 4490, 4491],
  "needs_revision": {
    "4472": "KEY CONFLICT: DB correct_index=120 but computed answer=150. ?:50=15:5 gives 15*10=150 (since 5*10=50). Stored answers array has '150' which is correct, solution correctly computes 150, but correct_index field contains 120 -- likely a data entry error. Fix correct_index to 150 before publishing."
  }
}