acmkiller's submissions for 1197 倒杨辉三角形

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acmkiller
on Jan. 30, 2007, 5:01 p.m.
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acmkiller
on Nov. 17, 2006, 5:08 p.m.
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152.00 KB
acmkiller
on Nov. 17, 2006, 5:07 p.m.
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152.00 KB