Input how many groups data And Input the data a b (0<a<b<1000) 1 97 99 9 10 11 12 13 14 21 22 23 24 28 30 33 35 36 37 38 39 40 43 45 47 48 51 53 5 4 55 61 63 64 65 66 67 68 70 72 73 74 请按任意键继续. . .