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ganlei2006

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2Â¥: Originally posted by ʱÓ곿ÐÇ at 2015-03-16 18:14:36
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equation cal_a'(x,y);
cal_a'(x,y)$(ord(x)=ord(y)).. a'(x,y) =a(x)-1;
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3Â¥2015-03-17 09:30:40
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