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用pascal的注意!!

Posted by dugushuiyi at 2008-07-01 14:32:47 on Problem 2779 and last updated at 2008-07-01 14:36:23
此题在计算交点的x坐标时,一定要用double存,不要用extended存。
因为extended最后可能要随机生成几位数字,在排序时有可能因此出错(因为排序要比较2~3为关键字)。

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