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

class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        int monsterCount = int.Parse(Reader.ReadLine());

        this.MonsterList = Reader.GetInt();


        int ans = this.GetAns(100, 100, Convert.ToInt32("1".PadLeft(monsterCount, '1'), 2));
        Console.WriteLine(ans);

    }

    private int[] MonsterList;

    Dictionary<int, Dictionary<int, int>> dic = new Dictionary<int, Dictionary<int, int>>();

    private int GetAns(int hp, int maxHp, int target)
    {
        if (!dic.ContainsKey(hp))
        {
            dic.Add(hp, new Dictionary<int,int>());
        }
        if (dic[hp].ContainsKey(target))
        {
            return dic[hp][target];
        }

        int ans = 0;

        if (target == 0)
        {
            ans = hp;
        } else if(hp <= 0) {
            ans = 0;
        }
        else
        {
            for (int i = 0; i < MonsterList.Length; i++)
            {
                int key = Convert.ToInt32("1".PadRight(i + 1, '0'), 2);
                if ((target & key) == key)
                {
                    int nextHP = Math.Min(maxHp, hp + this.MonsterList[i]);
                    int nextMaxHp = maxHp;
                    if (this.MonsterList[i] < 0)
                    {
                        nextMaxHp += 100;
                    }
                    int ret = this.GetAns(nextHP, nextMaxHp, target - key);
                    ans = Math.Max(ans, ret);
                }
            }
        }

        this.dic[hp].Add(target, ans);
        return ans;

    }



    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"



4
-40 -60 210 -110



 
";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        public static int[] GetInt(char delimiter = ' ', bool trim = false)
        {
            string inptStr = ReadLine();
            if (trim)
            {
                inptStr = inptStr.Trim();
            }
            string[] inpt = inptStr.Split(delimiter);
            int[] ret = new int[inpt.Length];
            for (int i = 0; i < inpt.Length; i++)
            {
                ret[i] = int.Parse(inpt[i]);
            }
            return ret;
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}