using System;

using System.Collections.Generic;

using System.Linq;

using System.Text.RegularExpressions;

​

namespace HelloWorld

{

    public class Program

    {

      public static string buildPattern(int n, int m) {

        /*

      Mr. Vincent works in a door mat manufacturing company. One day, he designed a new door mat with the following specifications:

      Mat size must be N X M. (N is an odd natural number, and M is 3 times N.)

      The design should have 'WELCOME' written in the center.

      The design pattern should only use |, . and - characters.

      Sample

      Size: 7 x 21 

      ---------.|.--------- -> 9 3 9 -> (21 - 3) / 2

      ------.|..|..|.------ -> 6 9 6

      ---.|..|..|..|..|.--- -> 3 15 3

      -------WELCOME-------

      ---.|..|..|..|..|.---

      ------.|..|..|.------

      ---------.|.---------

      Size: 11 x 33

      ---------------.|.---------------

      ------------.|..|..|.------------

      ---------.|..|..|..|..|.---------

      ------.|..|..|..|..|..|..|.------

      ---.|..|..|..|..|..|..|..|..|.---

      -------------WELCOME-------------

      ---.|..|..|..|..|..|..|..|..|.---

      ------.|..|..|..|..|..|..|.------

      ---------.|..|..|..|..|.---------

      ------------.|..|..|.------------

      ---------------.|.---------------

      For example

      Input Format

      A single line containing the space separated values of N and M.

      Constraints

      5 < N < 101

      15 < M < 303

      Output Format

      Output the design pattern.

      Sample Input

      9 27

      Sample Output

      ------------.|.------------

      ---------.|..|..|.---------

      ------.|..|..|..|..|.------

      ---.|..|..|..|..|..|..|.---

      ----------WELCOME----------

      ---.|..|..|..|..|..|..|.---

      ------.|..|..|..|..|.------

      ---------.|..|..|.---------

      ------------.|.------------

      */

        return "";

      }

        public static void Main(string[] args)

        {

      var testPattern = @"

      ------------.|.------------

      ---------.|..|..|.---------

      ------.|..|..|..|..|.------

      ---.|..|..|..|..|..|..|.---

      ----------WELCOME----------

      ---.|..|..|..|..|..|..|.---

      ------.|..|..|..|..|.------

      ---------.|..|..|.---------

      ------------.|.------------

      ";

      var pattern = buildPattern(9, 27);

            var testLines = testPattern.Split("\n").Select(line => line.Trim()).Where(line => line != "").ToArray();

            var resLines = pattern.Split("\n").Select(line => line.Trim()).Where(line => line != "").ToArray();

            var success = true;

            Console.WriteLine("Result value: ");

            Console.WriteLine(pattern);

            Console.WriteLine("Excepted value: ");

            Console.WriteLine(testPattern);

            if (testLines.Length != resLines.Length) {

                Console.WriteLine("The pattern is not ok, lines diff");

                Console.WriteLine("Result lines: "+ resLines.Length.ToString());

                Console.WriteLine("Excepted lines: "+ testLines.Length.ToString());

                Console.WriteLine("Execution fail");

                return;

            }

            for(var i = 0; i < testLines.Length; i++) {

              if (testLines[i] != resLines[i]) {

                success = false;

                Console.WriteLine($"The pattern line {i}, is not ok, line diff");

                Console.WriteLine("Result line: "+ resLines[i]);

                Console.WriteLine("Excepted line: "+ testLines[i]);

              }

            }

            if (success) {

              Console.WriteLine("Execution succesfull");

            } else {

              Console.WriteLine("Execution fail");

            }

        }

    }

}