PointOnRectangleBorder

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PointAtRectangularSide
{
    class Program
    {
        static void Main(string[] args)
        {
            var x1 = double.Parse(Console.ReadLine());
            var y1 = double.Parse(Console.ReadLine());
            var x2 = double.Parse(Console.ReadLine());
            var y2 = double.Parse(Console.ReadLine());

             var x = double.Parse(Console.ReadLine());
             var y = double.Parse(Console.ReadLine());

            var checkx = (x == x1 || x == x2);
            var checky = (y == y1 || y == y2);

            var checkxrange = (x >= x1) && (x <= x2);
            var checkyrange = (y >= y1) && (y <= y2);


            if ( (checkx && checkxrange && checkyrange)
                                               ||
                (checky && checkyrange && checkxrange) )

            {
                Console.WriteLine("Border");
            }

            else Console.WriteLine("Inside / Outside");
        }
    }
}

 /* var x1 = double.Parse(Console.ReadLine());
            var y1 = double.Parse(Console.ReadLine());
            var x2 = double.Parse(Console.ReadLine());
            var y2 = double.Parse(Console.ReadLine());

             var x = double.Parse(Console.ReadLine());
             var y = double.Parse(Console.ReadLine());

            {
                if (((x == x1 || x == x2) &&
                   (y >= y1) && (y <= y2))
                                    ||
                    ((y == y1 || y == y2) &&
                    (x >= x1) && (x <= x2)))

                {
                    Console.WriteLine("Border");
                }
                else Console.WriteLine("Inside / Outside");
            }
        }
    }
}
    */