题目描述
Problem Description
In a two-dimensional plane, there are $n$ points.
For each point, calculate the sum of the Euclidean distances to all other points.
The relative error should not exceed $0.1\%$.
Input Format
The first line contains an integer $n$.
The next $n$ lines each contain two integers $x, y$, representing the coordinates of a point.
Output Format
Output $n$ lines, each containing a real number, representing the answer for each point.
Sample Input and Output
Sample Input #1
4
-1 0
0 0
3 3
-1 1
Sample Output #1
7.000000000000
6.656854249492
13.714776642119
6.886349517373
Sample Input #2
25
-2 -2
-2 -1
-2 0
-2 1
-2 2
-1 -2
-1 -1
-1 0
-1 1
-1 2
0 -2
0 -1
0 0
0 1
0 2
1 -2
1 -1
1 0
1 1
1 2
2 -2
2 -1
2 0
2 1
2 2
Sample Output #2
79.340412611230
68.023981606779
64.155694316737
68.023981606779
79.340412611230
68.023981606779
55.532407162959
51.265774235248
55.532407162959
68.023981606779
64.155694316737
51.265774235248
46.859106568475
51.265774235248
64.155694316737
68.023981606779
55.532407162958
51.265774235248
55.532407162959
68.023981606779
79.340412611230
68.023981606779
64.155694316737
68.023981606779
79.340412611230
Sample Input #3
See attachment
Sample Output #3
See attachment
Notes/Hints
For all data, $2 \leq n \leq 100000$, $-10^6 \leq x, y \leq 10^6$.
| Subtask Number | Additional Constraints | Score |
|---|---|---|
| 1 | $n \leq 1000$ | 4 |
| 2 | All points are collinear | 16 |
| 3 | Coordinates of points are random, relative error not exceeding $2\%$ is acceptable | 20 |
| 4 | 60 |
输入格式
见题面 Input 部分
输出格式
见题面 Output 部分
样例输入
4
-1 0
0 0
3 3
-1 1
样例输出
7.000000000000
6.656854249492
13.714776642119
6.886349517373