06. Point on Rectangle Border - alternative

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

namespace ConsoleApp5
{
    class Program
    {
        static void Main(string[] args)
        {
            double x1 = double.Parse(Console.ReadLine());
            double y1 = double.Parse(Console.ReadLine());
            double x2 = double.Parse(Console.ReadLine());
            double y2 = double.Parse(Console.ReadLine());

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

            var side1 = (x == x1) && (y >= y1) && (y <= y2);
            var side2 = (x == x2) && (y >= y1) && (y <= y2);
            var side3 = (y == y1) && (x >= x1) && (x <= x2);
            var side4 = (y == y2) && (x >= x1) && (x <= x2);

            if (side1 || side2 || side3 || side4)
            {
                Console.WriteLine("Border");
            }
            else
            {
                Console.WriteLine("Inside / Outside");
            }
        }
    }
}