k大俠解題總是又快又好。讚一個。如果給出項差是負數，例如-8，-6結論會是一樣嗎？

來源: wxcfan123 於 2023-11-27 18:42:03 [舊帖] [給我悄悄話] 本文已被閱讀：次

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