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好家伙

Posted by QuantumBolt at 2021-07-13 23:47:53 on Problem 1474
In Reply To:想到以前刚学半平面交调了一天的代码的我 Posted by:2422 at 2020-06-16 14:38:31
半平面交wa了无数次, 这就过了。。。。。。

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