哈哈，这让我想起了五年级小中刷AoPS，今年参加AMC10的。

来源: wanttosaysomething 于 2019-02-10 08:48:56 [旧帖] [给我悄悄话] 本文已被阅读：次

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

Change Ad Consent