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(); } }