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Re:解题思路，及公式的推导，供大家参考

Posted by buffonzeng at 2007-02-20 23:58:36 on Problem 1455
In Reply To:解题思路，及公式的推导，供大家参考 Posted by:xiao1590 at 2007-02-20 12:58:16 
冲你这份热心，顶了！
这年头太缺乏肯分享思路的人了
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