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Re:Catalan~~终于有我知道的问题了,hiahia~~

Posted by nova_7zeal at 2008-07-22 20:46:13 on Problem 1095
In Reply To:Catalan~~终于有我知道的问题了,hiahia~~ Posted by:RoBa at 2005-12-19 16:45:27
haha卡特岚数 组合数学~~

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