HBC214462圆的面积ILOVEACM题解

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请输出“/*I like "algorithmic competitions" and I want to be stronger*/”即可，。

请输出“/*I like "algorithmic competitions" and I want to be stronger*/”即可。（ 不含最外层的双引号）。 

标签： HBC214462圆的面积ILOVEACM题解