using System;

using System.Text.RegularExpressions; 

using System.IO;

public class Program

{

    public static void Main()

    {

        try 

        {

            Regex regex = new Regex(@"^(.+)\/([^\/]+)$");

            Console.WriteLine("Enter the path to the xml file");

            string path = Console.ReadLine();

            if(!regex.Match(path).Success)

            {

                throw new ArgumentException("The pattern of the path is not correct");

            }

            if(!File.Exists(path)) 

            {

                throw new ArgumentException($"The file inside the path: {path} does currently not exists");

            }

            Console.WriteLine("Enter the output path");

            string outputPath = Console.ReadLine();

            if(!regex.Match(outputPath).Success)

            {

                throw new ArgumentException("The pattern of the output path is not correct");

            }

            if(!File.Exists(outputPath)) 

            {

                throw new ArgumentException($"The file inside the path: {path}, does currently not exists");

            }

        }

        catch (Exception ex)

        {

            Console.WriteLine($"An unxedpected error occurred: {ex.Message}");

        }

    }

}