LightTheTorches

using System;
using System.Text;
class LightTheTorches
{
    static void Main()
    {
        int darkRooms = 0;
        int result = 0;
        byte numberOfRooms = byte.Parse(Console.ReadLine());
        string isLit = Console.ReadLine();
        StringBuilder sb = new StringBuilder();
        int index = 0;
        for (int i = 0; i < numberOfRooms; i++)
        {
            sb.Append(isLit[index]);
            if (index == isLit.Length - 1)
            {
                index = 0;
            }
            else
            {
                index++;
            }
        }
        // Console.WriteLine(sb); // TEST
        string[] values = new string[2];
        string newDirection = "";
        string oldDirection = "";
        int distance = 0;
        string move = "";
        int priestPosition = numberOfRooms / 2;
        while (true)
        {

            move = Console.ReadLine();
            if (move.Equals("END"))
            {
                break;
            }
            else
            {
                values = move.Split(' ');
                newDirection = values[0];
                if (numberOfRooms == 1)
                {
                    if (sb[0].Equals('D'))
                    {
                        result = 68;
                    }
                    else
                    {
                        result = 0;
                    }
                    if (move.Equals("END"))
                    {
                        break;
                    }
                }
                if (newDirection.Equals(oldDirection) && newDirection.Equals("LEFT"))
                {
                    if (priestPosition == 0)
                    {
                        // Console.WriteLine(sb); // TEST
                        continue;
                    }
                }
                else if (newDirection.Equals(oldDirection) && newDirection.Equals("RIGHT"))
                {
                    if (priestPosition == sb.Length - 1)
                    {
                        // Console.WriteLine(sb); // TEST
                        continue;
                    }
                }
                distance = int.Parse(values[1]);
            }
            if (newDirection.Equals("LEFT"))
            {
                priestPosition -= (distance + 1);
                if (priestPosition < 0)
                {
                    priestPosition = 0;
                }
            }
            else
            {
                priestPosition += (distance + 1);
                if (priestPosition > sb.Length - 1)
                {
                    priestPosition = sb.Length - 1;
                }
            }
            if (sb[priestPosition].Equals('L'))
            {
                sb[priestPosition] = 'D';
            }
            else
            {
                sb[priestPosition] = 'L';
            }
            oldDirection = newDirection;
            // Console.WriteLine(sb); // TEST
        }
        // Console.WriteLine(sb); // TEST
        darkRooms = 0;
        for (int i = 0; i < sb.Length; i++)
        {
            if (sb[i].Equals('D'))
            {
                darkRooms++;
            }
        }
        if (numberOfRooms > 1)
        {
            result = darkRooms * 68;
        }
        Console.WriteLine(result);
    }
}