111111111122222222221100010100100101000101100010100100100110001010001122000202002002020002022000202002002002200020200022011220121201221022110212102112101221021210221202112012120112110221201212021220112102121012112021210212201221012120121102112201212012210221102121021120第2章示例2.16。