298期:半数【《01,02,04,08,12,13,14,15,17,23,26,27,28,29,31,32,33,34,36,37,39,41,45,47》】开:23准
299期:半数【《01,02,08,10,12,14,15,19,20,21,23,28,29,31,34,37,38,40,41,42,43,45,47,49》】开:49准
300期:半数【《02,03,06,07,08,09,12,13,14,15,16,17,20,21,22,24,27,31,34,38,39,43,46,49》】开:40错
301期:半数【《01,02,04,06,09,10,11,15,16,20,21,24,25,26,27,28,31,35,38,40,43,47,48,49》】开:05错
302期:半数【《01,04,06,11,16,18,19,20,22,26,27,28,30,31,37,38,39,40,41,42,44,47,48,49》】开:22准
303期:半数【《02,05,06,07,09,11,14,21,22,23,26,29,31,33,34,35,36,38,39,45,46,47,48,49》】开:？？？？