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果然幽默，以前还遇到这种情况。。。

Posted by js05 at 2005-06-05 11:04:59 on Problem 1191
In Reply To:也保证不了 Posted by:hawk at 2005-06-05 11:02:13 
计算几何题，算出结果-0.000000000000001（不知道有多少0）。。。

然后一舍入，就变成-0.000，就WA了。。。
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