import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int[] price = new int[n];
        for (int i = 0; i < n; i++) {
            price[i] = sc.nextInt();
        }
        int[] values = new int[1 << n];
        int[] costs = new int[1 << n];
        for (int i = 1; i < (1 << n); i++) {
            costs[i] = Integer.MAX_VALUE;
            for (int j = 0; j < n; j++) {
                if ((i & (1 << j)) == 0) {
                    continue;
                }
                values[i] = values[i ^ (1 << j)] + price[j];
                costs[i] = Math.min(costs[i], costs[i ^ (1 << j)] + Math.max(0, price[j] - values[i ^ (1 << j)] % 1000));
            }
        }
        System.out.println(costs[(1 << n) - 1]);
    }
    
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String nextLine() throws Exception {
        return br.readLine();
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}