DDFF's submissions for 1175 等比数列

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DDFF
on Oct. 18, 2013, 10:40 a.m.
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164.00 KB
DDFF
on Oct. 18, 2013, 10:11 a.m.
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164.00 KB
DDFF
on Oct. 18, 2013, 10:06 a.m.
0.00s
164.00 KB
DDFF
on Oct. 18, 2013, 10:05 a.m.
0.00s
164.00 KB