from fractions import Fraction as Q

def run(load,check):
 regular=[e for e in load('C01_RESULTS.json')['events'] if e['tradition']=='MT' and e['role'].startswith('Flood')]
 cumulative=[e for e in load('C266_ENDPOINTS.json') if e['profile']=='MT_ON' and e['source_role']=='Flood']
 check('held fields six and eight',len(regular)==6 and len(cumulative)==8)
 rows=[];hits=[]
 for e in regular:
  B=e['BC_Nisan'];rgap=8464-B-6
  for c in cumulative:
   C=c['source_BC_base'];cgap=12696-C-1406;res=cgap-rgap
   row={'regular':e,'cumulative_index':c['source_index'],'cumulative_BC':C,'regular_gap':rgap,'cumulative_gap':cgap,'residual':res}
   rows.append(row)
   if res==0:hits.append(row)
 check('affine compatibility over all48',all(r['residual']==2832-(r['cumulative_BC']-r['regular']['BC_Nisan']) for r in rows))
 check('four exact members',sorted((h['cumulative_index'],h['regular_gap']) for h in hits)==[(4,5998),(5,5999),(6,6000),(7,6001)])
 check('6000 normalGear2start',len([h for h in hits if h['regular_gap']==6000 and h['regular']['gear']==2 and h['regular']['role']=='Flood start'])==1)
 for h in hits:
  for e in [Q(-1,4),Q(1,4)]:check(f'phase gap j{h["cumulative_index"]} {e}',(-h['regular']['BC_Nisan']+e+8464)-(6+e)==(-h['cumulative_BC']+e+12696)-(1406+e))
 check('bridge and anchor difference',12696-8464-(1406-6)==2832)
 return {'all48_comparisons':rows,'matches':hits,'regular_register':regular,'cumulative_field':cumulative,'condition':'C-B=2832=8K-1400','regular_missing_cumulative_requirements':[{'regular':e,'required_C':e['BC_Nisan']+2832} for e in regular if e['gear']==1],'anchor_roles':'Q6 andQ1406 are reflected AD anchors, not literal BC endpoints.'}