guorui's submissions for 1186 均方差

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guorui
on Nov. 10, 2008, 6:14 p.m.
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guorui
on Nov. 9, 2008, 6:11 p.m.
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guorui
on Nov. 5, 2008, 4:01 p.m.
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152.00 KB
guorui
on Nov. 5, 2008, 3:59 p.m.
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144.00 KB