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几个易错点,我贡献了好几次WA

Posted by supersl at 2011-07-21 20:53:05 on Problem 3999
1.Zero or more lines (made entirely of white spaces) may appear between cases.
2.Separate the output of each two consecutive test cases by an empty line
3.最后一点属于我没学好,高斯消元选主元的时候不要找最大的,而要找绝对值最大的,是绝对值shift+1

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