TextBombardment

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TextBombardtment
{
    class TextBombardtment
    {
        static void Main()
        {
            StringBuilder input = new StringBuilder();
            input.Append(Console.ReadLine());
            int lineWidth = int.Parse(Console.ReadLine());
            int[] columnsToDestroy = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();

            for(int i = 0; i < columnsToDestroy.Length; i++)
            {
                while(columnsToDestroy[i] <= input.Length)
                {
                    char getCurrentChar = input[columnsToDestroy[i]];
                    char nextChar = ' ';
                    if( columnsToDestroy[i] + lineWidth <= input.Length)
                    {
                        nextChar = ( input[columnsToDestroy[i] + lineWidth] );
                    }

                    if(!char.IsWhiteSpace(nextChar))
                    {
                        input.Replace(getCurrentChar , ' ' , columnsToDestroy[i] , 1);
                        columnsToDestroy[i] = columnsToDestroy[i] + lineWidth;
                    }
                    else
                    {
                        input.Replace(getCurrentChar , ' ' , columnsToDestroy[i] , 1);
                        columnsToDestroy[i] = columnsToDestroy[i] + lineWidth;
                        break;
                    }

                }
            }

            Console.WriteLine(input);
        }
    }
}