摘要： 1 /*A Famous Music Composer 2 时间限制：1000 ms | 内存限制：65535 KB 3 难度：1 4 描述 5 Mr. B is a famous music composer. One of his most famous work was his set of preludes. These 24 pieces span the 24 musical keys 6 (there are musically distinct 12 scale notes, and each may use major or minor tonality)... 阅读全文