回複：大上午有人想做腦力運動嗎？看看這道3年級題。

來源: calligraphy 於 2010-03-10 11:15:32 [] [舊帖] [給我悄悄話] 閱讀數 : (198 bytes)
本帖於 2010-04-08 17:55:41 時間, 由版主 於德利 編輯

Let the other guy take first, then in my turn, I always take 1, 2, 3, or 4 to make the leftover 95, 90, 85, ..., 5.
Now after the opponent take any from remaining 5, I can take whatever was left.

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