260期：((05,09,11,12,16,18,19,20,27,28,30,35,39,40,42,49))开：20OK
261期：((04,07,08,11,14,18,23,24,25,32,33,42,45,47,48,49))开：24OK
262期：((02,03,08,09,13,14,15,16,18,19,22,30,32,35,39,40))开：30OK
263期：((03,04,06,08,11,18,20,21,22,30,31,35,38,39,43,46))开：09x
264期：((02,03,06,13,17,19,20,24,26,30,32,36,38,41,44,49))开：21x
265期：((01,02,04,06,07,09,10,17,20,24,29,33,36,39,43,47))开：//