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5563：Clarke and five-pointed star
题目描述
Clarke is a patient with multiple personality disorder. One day, Clarke turned into a learner of geometric.
When he did a research with polygons, he found he has to judge if the polygon is a five-pointed star at many times. There are 5 points on a plane, he wants to know if a five-pointed star existed with 5 points given.
When he did a research with polygons, he found he has to judge if the polygon is a five-pointed star at many times. There are 5 points on a plane, he wants to know if a five-pointed star existed with 5 points given.
输入解释
The first line contains an integer $T(1 \le T \le 10)$, the number of the test cases.
For each test case, 5 lines follow. Each line contains 2 real numbers $x_i, y_i(-10^9 \le x_i, y_i \le 10^9)$, denoting the coordinate of this point.
For each test case, 5 lines follow. Each line contains 2 real numbers $x_i, y_i(-10^9 \le x_i, y_i \le 10^9)$, denoting the coordinate of this point.
输出解释
Two numbers are equal if and only if the difference between them is less than $10^{-4}$.
For each test case, print $Yes$ if they can compose a five-pointed star. Otherwise, print $No$. (If 5 points are the same, print $Yes$. )
For each test case, print $Yes$ if they can compose a five-pointed star. Otherwise, print $No$. (If 5 points are the same, print $Yes$. )
输入样例
2 3.0000000 0.0000000 0.9270509 2.8531695 0.9270509 -2.8531695 -2.4270509 1.7633557 -2.4270509 -1.7633557 3.0000000 1.0000000 0.9270509 2.8531695 0.9270509 -2.8531695 -2.4270509 1.7633557 -2.4270509 -1.7633557
输出样例
Yes No
提示
来自杭电HDUOJ的附加信息
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最后修改于 2020-10-25T23:23:47+00:00 由爬虫自动更新
共提交 0 次
通过率 --%
| 时间上限 | 内存上限 |
| 2000/1000MS(Java/Others) | 65536/65536K(Java/Others) |
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