cat's submissions for 1208 排列对称串

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AC | C
cat
on Dec. 17, 2008, 6:16 p.m.
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AC | C
cat
on Dec. 12, 2008, 6:31 p.m.
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172.00 KB
cat
on Dec. 1, 2008, 9:01 p.m.
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168.00 KB