DCP-20: Back to School Devskil Only Solution In C#

https://www.devskill.com/CodingProblems/ViewProblem/20

using System; 

 public class Exercise8 

{ 
     public static void Main()
   
     {

  
   int t=Convert.ToInt32(Console.ReadLine());

   for(int i=1;i<=t;i++){
       string s=Console.ReadLine();
       string[] values=s.Split(' ');
       double Cx=double.Parse(values[0]);
       double Cy=double.Parse(values[1]);
       double R=double.Parse(values[2]);
       double Px=double.Parse(values[3]);
       double Py=double.Parse(values[4]);
       double ds=((Cx-Px)*(Cx-Px))+((Cy-Py)*(Cy-Py));
       double d=Math.Pow(ds,0.5);
       if(d<R)
       {
           Console.WriteLine("Case "+i+": Inside");
       }
       else if(d<=R)
       {
           Console.WriteLine("Case "+i+": OnCircle");
       }
       else{
        Console.WriteLine("Case "+i+": Outside");
   
     }
   }
     }

}