冰's submissions for 1175 等比数列

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冰
on May 20, 2008, 11:36 p.m.
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冰
on May 20, 2008, 11:36 p.m.
0.00s
152.00 KB
冰
on May 20, 2008, 11:33 p.m.
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152.00 KB
冰
on May 20, 2008, 11:27 p.m.
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152.00 KB