245期：((02,03,07,13,15,18,19,22,23,26,35,36,40,41,42,44))开：44准
246期：((03,04,10,15,19,20,21,22,23,24,26,29,41,46,48,49))开：06错
247期：((03,05,06,07,14,22,23,25,26,27,29,30,39,40,42,44))开：25准
248期：((02,04,06,07,09,16,17,19,21,25,26,29,37,39,41,49))开：12错
249期：((01,05,10,17,18,20,23,26,27,32,35,37,40,41,46,49))开：==？