把USAMO等同于机器，你也太刻薄了，还有刷童话神话也没有那么高大上，饭都吃不上纯做梦

来源: zitan21 于 2024-02-17 06:45:26 [旧帖] [给我悄悄话] 本文已被阅读：次

经济基础决定上层建筑

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