答案
1---5 CCBCA 6----10 DCCDC 11----15 ABCAD 16---20 BACAB
21----25 BDCAB 26----30 CACCB 31----35 ACDBA 36----40 ABBCA
41---45 ACCBD 46----50 DAABB 51----55 DBACB 56 ----60 BDDCB
61---65 DCBAB 66---- 70 CCBCB 71----75 BBDCB 76----80 BAAAC
81----85 CDDAD 86----90 DACDB 91----95 CDCDD 96----100 BBBAB
