ACM中关于文件的读入输出

直接看下面代码

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2019牛客国庆集训派对day6 H-Super Fast Fourier Transform(思维)

题目大意

题目链接

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Hello World

Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the answer in troubleshooting or you can ask me on GitHub.

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