TextBombardment

using System;
using System.Linq;

class TextBombardment
{
    static void Main()
    {
        string input = "Well this problem is gonna be a ride.";
        //string input = Console.ReadLine();
        int width = int.Parse(Console.ReadLine());
        string bombList = Console.ReadLine();

        int hight = (int)Math.Ceiling(input.Length / 10.0);
        char[,] arr = new char[hight, width];

        int[] bombColums = Array.ConvertAll(bombList.Split(' '), int.Parse);

        int count = 0;
        for (int row = 0; row < arr.GetLength(0); row++)
        {
            for (int col = 0; col < arr.GetLength(1); col++)
            {
                if (count < input.Length)
                {
                    arr[row, col] = input[count];
                    count++;
                }
            }
        }

        for (int col = 0; col < arr.GetLength(1); col++)
        {
            bool bomb = false;
            char space = ' ';
            int row = 0;

            for (int i = 0; i < bombColums.Length; i++)
            {
                if (bombColums[i] == col)
                {
                    while (row < arr.GetLength(0))
                    {
                        if (arr[row, col] != space)
                        {
                            arr[row, col] = space;
                            bomb = true;
                        }
                        else if (bomb == true && arr[row, col] == space)
                        {
                            break;
                        }
                        row++;
                    }
                    row = 0;
                }
            }
        }

        string result = "";
        for (int row = 0; row < arr.GetLength(0); row++)
        {
            for (int col = 0; col < arr.GetLength(1); col++)
            {
                result = result + Convert.ToString(arr[row, col]);
            }
        }
        result = result.TrimEnd();
        Console.WriteLine(result);
    }
}