Jimandhisbrotherlivedonthe80thfloor.Whencominghomeoneda...
問題詳情：Jimandhisbrotherlivedonthe80thfloor.Whencominghomeoneday,totheir 11,theliftswerenotworkingandtheyhadto 12 thestairs. Afterreachingthe20thfloor,breathlessand 13,theydecidedtoleavethe...