power's submissions for 1550 等比数列求和

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power
on Aug. 25, 2010, 1:29 p.m.
0.05s
160.00 KB
power
on Aug. 25, 2010, 1:17 p.m.
0.02s
160.00 KB
power
on Aug. 25, 2010, 1:12 p.m.
0.02s
208.00 KB
power
on Aug. 25, 2010, 1:11 p.m.
0.01s
208.00 KB