using System;

using System.Collections.Generic;

using System.Linq;

​

struct coordinate{

    public int start;

    public int offset;

​

    public coordinate(int start, int offset){

        this.start = start;

        this.offset = offset;

    }

}

public class Program

{

    public static void Main(string[] args)

    {

        //TODO Check ar yra argumentai

        string text = "The quick brown fox jumps over the lazy dog.";

        string coordinateString = "[[4,15], [35,8]]";

​

        coordinateString = StripArray(coordinateString);

        List<coordinate> coordinates = GetValues(coordinateString);

        coordinates = coordinates.OrderByDescending(x => x.start).ToList();

        //TODO test for overlap of coords

​

        text = Programate(text, coordinates);

        System.Console.WriteLine(text);

    }

​

    static string StripArray(string coordinateString){

        int length = coordinateString.Length;

        if (coordinateString[0] == '[')

        {

            if (coordinateString[length - 1] == ']')

            {

                coordinateString = coordinateString.Substring(1, length - 2);

            }

        }

        return coordinateString;

    }

​

    static List<coordinate> GetValues(string coordinateString){

        string[] splitas = coordinateString.Split(new string[] {", "}, StringSplitOptions.None);

        List<coordinate> coordinates = new List<coordinate>();

        foreach (var item in splitas)

        {

            string[] temp = StripArray(item).Split(',');

            coordinate a = new coordinate(Int32.Parse(temp[0]), Int32.Parse(temp[1]));

            coordinates.Add(a);

        }

        return coordinates;

    }

​

    static string Programate(string text, List<coordinate> coordinates){

        foreach (var item in coordinates)

        {

            int start = item.start;

            int offset = item.offset;

            if (item.start + item.offset > text.Length){

                System.Console.WriteLine("gaidys o ne inputas. net ne gaidys");

                Environment.Exit(1);

            };

            text = text.Insert(start + offset, "</b>");

            text = text.Insert(start, "<b>");

        }

        return text;

    }

}