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

public class Program
{
    static private int N;
    static private int[] M;
    static private void Scan()
    {
        N = int.Parse(Console.ReadLine());
        M = new int[N];
        for (int i = 0; i < N; i++)
        {
            M[i] = int.Parse(Console.ReadLine());
        }
    }

    static public void Main(string[] args)
    {
        Scan();

        int[] dp = (new int[1 << N]).Select(i => int.MaxValue).ToArray();
        int[] teika = (new int[1 << N]).Select(i => int.MaxValue).ToArray();
        dp[0] = 0;
        teika[0] = 0;

        for (int i = 0; i < 1 << N; i++)
        {
            for (int j = 0; j < N; j++)
            {
                int k = 1 << j;
                if ((i & k) > 0) continue;

                teika[i + k] = teika[i] + M[j];
                dp[i + k] = Math.Min(dp[i + k], dp[i] + Math.Max(0, M[j] - teika[i] % 1000));
            }
        }

        Console.WriteLine(dp[(1 << N) - 1]);
    }

}