270期：((04,09,11,16,17,20,22,26,28,29,30,31,38,44,45,48))开：44准
271期：((01,02,03,04,07,20,22,24,27,31,32,36,40,44,46,49))开：26错
272期：((01,02,04,05,10,13,14,16,22,23,28,30,32,34,46,47))开：23准
273期：((02,04,07,08,12,15,20,23,26,32,33,35,37,39,47,48))开：05错
274期：((06,08,15,17,20,25,26,27,34,38,39,42,43,44,46,49))开：==？