di en's submissions for 1208 排列对称串

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di en
on March 24, 2009, 7:18 p.m.
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276.00 KB
di en
on March 24, 2009, 7:05 p.m.
0.02s
276.00 KB
di en
on March 24, 2009, 6:56 p.m.
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276.00 KB