252期：((02,03,06,09,11,13,17,22,25,28,30,31,35,39,43,45))开：22准
253期：((03,04,05,12,13,15,18,25,29,31,32,34,36,44,46,47))开：16错
254期：((02,04,05,07,08,14,21,23,24,25,27,29,35,40,41,48))开：02准
255期：((02,03,04,07,10,15,24,30,31,33,39,40,42,43,44,49))开：44准
256期：((02,06,08,15,16,18,20,27,30,31,32,33,40,45,46,49))开：01错
257期：((03,04,07,08,13,18,20,22,30,32,36,38,42,44,45,47))开：==？