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如果-0算valid的话,--0,- 0又算不算呢?你说的那些,我除了这个负号不知道题目怎么要求,其他都考虑了

Posted by dynamic at 2005-11-13 16:06:03
In Reply To:F我考虑了超过10^15,多余符号,和为零,不为一行,个数不足和超过N,然后树的数目不唯一或者更优,然后就AC了,结果由于犯低级错误白罚了60MIN Posted by:LIANGLIANG at 2005-11-13 15:42:26


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