Ladybugs - Arrays

using System;
using System.Linq;

public class Program
{
	public static void Main()
	{
		int fieldSize = int.Parse(Console.ReadLine());
		int [] field = new int [fieldSize];

		int [] initialIndexes = Console.ReadLine().Split().Select(int.Parse).ToArray();

		for (int i=0; i<initialIndexes.Length; i++)
		{
			if (initialIndexes[i]>=0 && initialIndexes[i]<field.Length)
			{
				field[initialIndexes[i]] =1;
			}
		}

		while (true)
		{
			string input = Console.ReadLine();

			if (input == "end")
			{
				break;
			}

			string[] command = input.Split();
			int ladybugIndex = int.Parse(command[0]);
			bool isFirst = true;

			while (ladybugIndex>=0 && ladybugIndex<field.Length && field[ladybugIndex]!=0)
			{
				if (isFirst)
				{
					field[ladybugIndex]=0;
					isFirst = false;
				}

				string direction = command[1];
				int flyLength = int.Parse(command[2]);

				if (direction == "left")
				{
					ladybugIndex -= flyLength;

					if (ladybugIndex<field.Length && ladybugIndex>=0)
					{

						if (field[ladybugIndex]!=1)
						{
							field[ladybugIndex]=1;
							break;
						}

					}
				}
				else
				{
					ladybugIndex += flyLength;

					if (ladybugIndex<field.Length && ladybugIndex>=0)
					{

						if (field[ladybugIndex]!=1)
						{
							field[ladybugIndex]=1;
							break;
						}

					}

				}
			}

		}
		Console.WriteLine(string.Join(" ",field));
	}
}