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A12732 | Heidi and the Turing Test (Hard)

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内存限制256MB
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题目描述

The first line contains an integer $k$ ( $1 \leq k \leq 4$ ), the number of rings.

The second line contains an integer $n$ ( $100 \leq n \leq 1\,000$ ), the number of samples per ring.

The following $n \times k$ lines contain the samples, one sample per line.

Each line contains a pair of integers $x_i, y_i$ , where $(x_i, y_i)$ are the coordinates of the $i$ -th sample.

输入格式

无

输出格式

Here is how one of tests with $k=4$ and $n=100$ looks like.

![](/uploads/luogu/CF1184C3/d78b71dfb582cda9ad7b1972e1d1931c9fb4a31d_d0ecd43f7ad5.png)You can download the sample input and output [here](//assets.codeforces.com/rounds/1184/c1.zip).

输入输出样例

输入 #1
5 1
1 1
1 -1
-1 1
-1 -1
2 0
输出 #1
3
输入 #2
5 2
1 1
1 -1
-1 1
-1 -1
2 0
输出 #2
5
C++ 编辑器
输入
输出