zdl's submissions for 1175 等比数列

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AC | C
zdl
on March 6, 2009, 2:52 p.m.
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IR | C
zdl
on March 6, 2009, 2:51 p.m.
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IR | C
zdl
on March 6, 2009, 2:51 p.m.
0.00s
0 B