{
  "good": [
    19899, 19900, 19901, 19902, 19904, 19905, 19906, 19907,
    19909, 19910, 19911, 19912, 19913, 19914, 19915, 19916,
    19917, 19918, 19919, 19920, 19921, 19922, 19923, 19924,
    19925, 19926, 19927, 19929, 19930, 19931, 19932, 19933,
    19934, 19935, 19936, 19937, 19938, 19939, 19940, 19941,
    19942, 19943, 19944, 19945, 19946, 19947, 19949, 19950,
    19951, 19952, 19953, 19954, 19955, 19957, 19958, 19959,
    19960, 19961, 19962, 19963, 19964, 19965, 19966, 19967,
    19968, 19970, 19971, 19972, 19973, 19974, 19975, 19976,
    19977, 19978, 19979, 19980, 19981, 19982, 19983, 19984,
    19985, 19986, 19987, 19988, 19989, 19990, 19991, 19992,
    19994, 19995, 19996, 19997, 19998, 19999, 20001, 20002,
    20003, 20004, 20005, 20006, 20007, 20009, 20010, 20011,
    20012, 20013, 20014, 20015, 20016, 20017, 20018, 20019,
    20020, 20021, 20022, 20023, 20024, 20025, 20026, 20027,
    20028, 20029, 20030, 20031, 20032, 20033, 20034, 20035,
    20036, 20037, 20038, 20039, 20040, 20041, 20042, 20043,
    20044, 20045, 20046, 20047, 20048, 20049, 20050, 20051,
    20052, 20053, 20054, 20055, 20056, 20057, 20058, 20059,
    20060, 20061, 20062, 20063, 20064, 20065, 20066
  ],
  "needs_revision": {
    "19903": "Question asks to find angle DBE but also states DBE=16 degrees in description; stored answer 38 matches angle ABD (intermediate step from reflex angle); solution computes 22 degrees which contradicts both values. KEY CONFLICT / ambiguous question text.",
    "19908": "KEY CONFLICT. Computation: 0.85P+0.70P=1.55P=341 gives P=220; non-member at 10% off = 0.9*220 = 198. Stored answer is 180. Solution text is garbled and acknowledges discrepancy without resolving it.",
    "19928": "Solution reasoning is inconsistent -- incorrectly aligns shaded units for B (claims unshaded B = 3 units from B:unshadedB = 5:2, but that would make B:unshadedB = 5:3); then reaches 5:10 = 1:2 not 3:5; appears to copy key answer without correct derivation.",
    "19948": "Solution claims shaded area equals small square area (2x2 = 4 sq cm) but stored answer is 8 sq cm; solution text trails off incomplete, appears to copy key without correct derivation.",
    "19956": "Solution is literally just 'The original paper is 4:3' -- no derivation of how cut-out C's length:breadth becomes 3:1; essentially an empty solution.",
    "19969": "Solution contains garbled/contradictory working: says 13u=78 so u=6 giving kaya=54, cheese buns = 54-225 = -171 (impossible); final answer 313 is correct but derivation is incoherent.",
    "19993": "Solution breaks off mid-derivation: 'angle a = 180 - 90 - ...' then copies key '52 degrees'; incomplete reasoning, no proper angle justification.",
    "20000": "Solution says 'Following the printed key' instead of deriving the number of notes; reasoning incomplete -- essentially copies key answer without showing full derivation.",
    "20008": "Label conflict: solution computes angle GDC = 180-118 = 62 degrees but question states angle GDC = 36 degrees; angle ADC = 62+36 = 98 uses both inconsistent values. Needs figure verification."
  }
}