273期：((02,04,06,07,10,19,22,23,24,26,30,33,35,41,44,46))开：04OK
274期：((02,03,07,10,18,27,28,29,31,33,37,40,44,46,48,49))开：44OK
275期：((12,13,16,20,26,30,31,33,35,39,40,42,43,44,46,48))开：45x
276期：((01,03,08,15,19,20,26,27,29,32,39,40,42,45,46,47))开：09x
277期：((01,02,06,11,16,17,19,22,25,27,29,34,40,42,46,48))开：16OK
278期：((09,11,12,18,21,24,25,26,28,29,30,32,36,42,47,49))开：28OK
279期：((11,12,22,23,26,27,28,32,33,36,38,40,42,44,46,48))开：27OK
7-5
280期：((02,03,05,06,08,11,14,16,18,29,31,37,38,39,45,46))开：42x
281期：((03,04,06,09,13,16,17,18,21,25,27,33,37,44,45,49))开：47x
282期：((01,04,08,10,12,16,18,19,30,32,34,41,43,45,46,47))开：41OK