思路不夠完善，再多想想一些可能性。。。。雖然這是數學題。。。

來源: 紫色海洋於 2023-02-28 06:58:26 [博客] [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.