Problem K
Association of Camera Makers
ACM (Association of Camera
Makers) is a company that produces amazing surveillance
cameras. Each camera can produce a live panoramic video feed,
giving you a 360-degree view of the surroundings. However, they
also have a certain visual range
You live near a huge prairie in which
Input
-
The first line of input contains two integers,
and . -
The next
lines each contain two integers, and , the location (in Cartesian coordinates) of the th cat’s favourite spot.
For all test cases,
Output
Output a single number
Sample Data Explanation
Put the camera at
Sample Input 1 | Sample Output 1 |
---|---|
4 3 1 1 0 2 0 0 3 2 |
1.00 |