pokemon dont go

using System;
using System.Linq;
using System.Collections.Generic;
using System.Numerics;
using System.Security;

namespace exampreparation
{
    class exam
    {
        static void Main(string[] args)
        {
            List<int> numbers = Console.ReadLine().Split().Select(int.Parse).ToList();

            int sum = 0;

            while (numbers.Count > 0)
            {
                int command = int.Parse(Console.ReadLine());
                int index = command;
                if (index < 0)
                {
                    int change = numbers[0];
                    sum += change;
                    numbers[0] = numbers[numbers.Count - 1];

                    for (int i = 0; i < numbers.Count; i++)
                    {
                        if (numbers[i] <= change)
                        {
                            numbers[i] += change;
                        }
                        else
                        {
                            numbers[i] -= change;
                        }
                    }
                }
                else if (index >= numbers.Count)
                {
                    int change = numbers[numbers.Count - 1];
                    sum += change;
                    numbers[numbers.Count - 1] = numbers[0];

                    for (int i = 0; i < numbers.Count; i++)
                    {
                        if (numbers[i] <= change)
                        {
                            numbers[i] += change;
                        }
                        else
                        {
                            numbers[i] -= change;
                        }
                    }

                }
                else
                {
                    int value = numbers[index];
                    sum += value;
                    numbers.RemoveAt(index);
                    for (int i = 0; i < numbers.Count; i++)
                    {
                        if (numbers[i] <= value)
                        {
                            numbers[i] += value;
                        }
                        else
                        {
                            numbers[i] -= value;
                        }
                    }

                }
            }

            Console.WriteLine(sum);
        }
    }
}