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好像还有问题哦……

Posted by aoxboxcox at 2011-04-25 16:05:54 on Problem 1279
In Reply To:莫名其妙的WA,莫名其妙的AC…… Posted by:Ever_ljq at 2011-03-31 21:25:56
试试这组数据,你输出的是:
-0.00

input:
1
8
0 0
10 0
5 10
5 15
10 15
10 5
5 5 
5 0

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