313期:半数【《01,02,04,05,07,11,12,13,15,16,17,19,22,23,24,25,29,38,40,43,44,46,48,49》】开:38准
314期:半数【《01,03,04,06,10,11,12,14,16,20,22,26,28,29,31,32,34,36,38,39,41,45,46,47》】开:23错
315期:半数【《01,03,04,07,10,11,13,15,16,17,21,22,28,32,35,36,37,38,39,41,43,45,47,48》】开:？？？？