繼續數竟或USACO都可以，堅持Model UN, 然後講好交叉興趣的故事。M現在自己說看這個。

來源: 其樂無窮於 2025-03-30 18:08:55 [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.