sunqiong's submissions for 1208 排列对称串

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sunqiong
on Dec. 3, 2008, 6:29 p.m.
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164.00 KB
sunqiong
on Dec. 3, 2008, 6:27 p.m.
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156.00 KB
sunqiong
on Dec. 3, 2008, 6:27 p.m.
0.00s
152.00 KB