或99個是一定的。用倒推從最後3個人。結果用在第二次推理上。

來源: 沒頭沒腦於 2011-12-09 01:36:55 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.