using System;
using System.Collections.Generic;
using System.Linq;

namespace Task02_PokemonDontGo
{
    class Program
    {

        static void Main(string[] args)
        {
            List<int> distance = Console.ReadLine().Split().Select(int.Parse).ToList();
            List<int> indexList = new List<int>();
            List<int> removedElements = new List<int>();

            int sum = 0;
            int removedElement = 0;

            while (distance.Count > 0)
            {
                int index = int.Parse(Console.ReadLine());
                indexList.Add(index);

                if (indexList.Count > 1 && index > indexList[indexList.Count - 2])
                {
                    removedElement = distance[distance.Count - 1];
                    removedElements.Add(removedElement);
                    distance[0] = removedElement;

                }
                else if (index < 0)
                {
                    removedElement = distance[0];
                    removedElements.Add(removedElement);
                    distance[0] = distance[distance.Count - 1];
                }
                else
                {
                    for (int i = 0; i < distance.Count; i++)
                    {
                        if (index == i)
                        {
                            removedElement = distance[i];
                            removedElements.Add(removedElement);
                            distance.Remove(distance[i]);
                        }
                    }
                }
                for (int i = 0; i < distance.Count; i++)
                {
                    if (distance[i] <= removedElement)
                    {
                        distance[i] += removedElement;
                    }
                    else
                    {
                        distance[i] -= removedElement;
                    }
                }
            }
            for (int i = 0; i < removedElements.Count; i++)
            {
                sum += removedElements[i];
            }
            Console.WriteLine(sum);
        }
    }
}