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这题是没有SPJ吗。。还是我的问题。。

Posted by heavyshower at 2020-05-26 16:33:25 on Problem 3689
我一直没过,就和网上搜的一份代码对拍。对拍半天找到了这个数据

2 1
49 22 48
23 26 99
61 34

答案真值是92.015625(5889/64).然后那份AC代码是输出92.01562,我的输出92.01563。。

但是后来又发现数据大一点的话我和那份AC代码的偏差就不止在小数位了。。所以还是我的错么。。以后有时间用分数类再来试一试。

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