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内详

Posted by Rainer at 2006-07-02 15:41:51 on Problem 2848
In Reply To:sample 2 的4,0经过HH为什么可以 Posted by:daringQQ at 2006-07-02 14:39:34 
GGGG_
  ~
GG_GG   (H)
^   ~
_GGGG   (H)
  ^
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