《337期》半数<<01,02,03,04,07,08,10,11,16,17,18,19,22,24,25,27,31,32,35,37,43,44,45,48>>】开48准
《338期》半数<<01,03,04,05,06,08,09,12,13,16,17,18,19,24,27,28,29,31,32,34,40,46,47,49>>】开40准
《339期》半数<<01,03,04,06,07,08,09,11,13,20,21,22,24,25,28,29,31,32,33,35,40,44,48,49>>】开38错
《340期》半数<<01,02,04,05,06,07,10,12,14,19,20,23,25,29,32,34,35,38,39,40,44,45,47,49>>】开？？