9. Longer Line

//Doesn't fully work!

using System;

namespace LongerLine
{
    class Program
    {
        static void Main(string[] args)
        {
            int NumOfPoints = 4; int ArraySize = (int)Math.Log(1.0 * NumOfPoints, 2);

            double[] Point = new double[NumOfPoints * 2];
            double[] LineDistance = new double[ArraySize];

            int Index = 0; double LastDistance = 0; int MaxIndex = 0;

            for (int j = -1, i = 0; i < NumOfPoints; i++)
            {
                Point[Index++] = double.Parse(Console.ReadLine());
                Point[Index++] = double.Parse(Console.ReadLine());

                if ((i + 1) % 2 == 0)
                {
                    LineDistance[++j] = FindDistanceOfLine(Point[Index - 4], Point[Index - 3], Point[Index - 2], Point[Index - 1]);

                    if(LastDistance == LineDistance[j])
                    {
                        MaxIndex = j - 1;
                    }
                    else if (LastDistance < LineDistance[j])
                    {
                        LastDistance = LineDistance[j];
                        MaxIndex = j;
                    }
                }
            }
            double Distance1 = FindDistanceToPoint(Point[MaxIndex * NumOfPoints], Point[MaxIndex * NumOfPoints + 1]);
            double Distance2 = FindDistanceToPoint(Point[MaxIndex * NumOfPoints + 2], Point[MaxIndex * NumOfPoints + 3]);

            if(Distance2 > Distance1)
            {
                Console.WriteLine($"({Point[MaxIndex * NumOfPoints]}, {Point[MaxIndex * NumOfPoints + 1]})" +
                                  $"({Point[MaxIndex * NumOfPoints + 2]}, {Point[MaxIndex * NumOfPoints + 3]})");
            }
            else
            {
                Console.WriteLine($"({Point[MaxIndex * NumOfPoints + 2]}, {Point[MaxIndex * NumOfPoints + 3]})" +
                             $"({Point[MaxIndex * NumOfPoints]}, {Point[MaxIndex * NumOfPoints + 1]})");
            }
        }

        static double FindDistanceOfLine(double Point1, double Point2, double Point3, double Point4)
        {
            return Math.Abs(Math.Sqrt(Math.Pow((Point3 - Point1), 2) + Math.Pow((Point4 - Point2), 2)));
        }

        static double FindDistanceToPoint(double X, double Y)
        {
            return Math.Abs(Math.Sqrt(Math.Pow(X, 2) + Math.Pow(Y, 2)));
        }

    }
}