P03._Camera_View

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace P03._Camera_View
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] numbers = Console.ReadLine().Split().Select(int.Parse).ToArray();
            string text = Console.ReadLine();
            string pattern = @"[|<]+([\w]{" + numbers[0] + @"})([\w]{0," + numbers[1] +@"})";

            MatchCollection match = Regex.Matches(text, pattern);

            List<string> result = new List<string>();

            foreach (Match m in match)
            {
                result.Add(m.Groups[2].Value);
            }
            Console.WriteLine(string.Join(", ",result));
        }
    }
}