Ladybugs

using System;
using System.Linq;
public class Program
{
    public static void Main()
    {
        int fieldSize = int.Parse(Console.ReadLine());
        bool[] field = InitField(fieldSize);
        string input;
        while (!(input = Console.ReadLine()).Equals("end"))
        {
            var data = input.Split();
            int index = int.Parse(data[0]);
            int flyLength = int.Parse(data[2]);
            if (ValidIndex(index, fieldSize) && field[index])
            {
                if (data[1].Equals("left"))
                {
                    flyLength = -flyLength;
                }

                field[index] = false;
                do
                {
                    index += flyLength;
                } while (ValidIndex(index, fieldSize) && field[index]);

                if (ValidIndex(index, fieldSize))
                {
                    field[index] = true;
                }
            }
        }

        Console.WriteLine(string.Join(" ", field.Select(a => a ? 1 : 0)));
    }

    private static bool[] InitField(int fieldSize)
    {
        var field = new bool[fieldSize];
        var indexes = Console.ReadLine()
            .Split()
            .Select(int.Parse)
            .Where(i => i >= 0 && i < fieldSize);
        foreach (var index in indexes)
        {
            field[index] = true;
        }
        return field;
    }
    private static bool ValidIndex(int index, int fieldSize)
    {
        return index >= 0 && index < fieldSize;
    }
}