sharon's submissions for 1175 等比数列

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AC | C
sharon
on Dec. 11, 2008, 7:27 p.m.
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152.00 KB
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AC | C
sharon
on Oct. 15, 2008, 6:43 p.m.
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152.00 KB
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IR | C
sharon
on Oct. 15, 2008, 6:18 p.m.
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