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这个不是错误,而是你没有彻底理解题意。not in the middle是指合并两个串的时候,跟最终结果没有关系。In Reply To:虽然很少见,但这的确是usaco的错误。frkstyc可以自行查证,我用1795的程序居然能过掉这个题。 Posted by:faintzw at 2007-02-06 21:37:46 Followed by:
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