09. Pokemon Don't Go

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace L9._PokemonDon_tGo
{
    internal class Program
    {
        static void Main(string[] args)
        {
            List<int>  pokemonList = Console.ReadLine()
                .Split(' ',StringSplitOptions.RemoveEmptyEntries)
                .Select(int.Parse)
                .ToList();

            //List<int> sumList = new List<int>();
            int sum = 0;


            while (pokemonList.Count > 0)
            {
                int input = int.Parse(Console.ReadLine());

                if (input < 0)
                {
                    int removeOne = pokemonList[0];
                    //sumList.Add(pokemonList[pokemonList[0]]);
                    pokemonList[0] = pokemonList[pokemonList.Count - 1];
                    sum += removeOne;

                    LoopForIncreaseAndDecrease(pokemonList, removeOne);
                }

                else if (input >= pokemonList.Count)
                {
                    int removeTwo = pokemonList[pokemonList.Count - 1];
                    //sumList.Add(pokemonList[pokemonList.Count - 1]);
                    pokemonList[pokemonList.Count - 1] = pokemonList[0];
                    sum += removeTwo;

                   LoopForIncreaseAndDecrease(pokemonList,removeTwo);
                }

                else
                {
                    int removeThree = pokemonList[input];
                    //sumList.Add(pokemonList[input]);
                    pokemonList.RemoveAt(input);
                    sum += removeThree;

                    LoopForIncreaseAndDecrease(pokemonList,removeThree);
                }
            }

            Console.WriteLine(sum);
        }
        static void LoopForIncreaseAndDecrease (List<int> pokemonList , int remove)
        {
            for (int i = 0; i < pokemonList.Count; i++)
            {
                if (pokemonList[i] <= remove)
                {
                    pokemonList[i] += remove;
                }
                else
                {
                    pokemonList[i] -= remove;
                }
            }
        }
    }
}