red's submissions for 1197 倒杨辉三角形

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red
on May 6, 2008, 12:52 a.m.
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red
on May 6, 2008, 12:46 a.m.
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152.00 KB
red
on May 6, 2008, 12:45 a.m.
0.00s
152.00 KB