import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] damage = new int[n];
        for (int i = 0; i < n; i++) {
            damage[i] = sc.nextInt();
        }
        int[] dp = new int[1 << n];
        dp[0] = 100;
        for (int i = 1; i < (1 << n); i++) {
            int max = 100;
            for (int j = 0; j < n; j++) {
                if ((i & (1 << j)) != 0 && damage[j] < 0) {
                    max += 100;
                }
            }
            for (int j = 0; j < n; j++) {
                if ((i & (1 << j)) == 0) {
                    continue;
                }
                if (dp[i ^ (1 << j)] <= 0) {
                    continue;
                }
                dp[i] = Math.max(dp[i], Math.min(dp[i ^ (1 << j)] + damage[j], max));
            }
        }
        System.out.println(dp[(1 << n) - 1]);
    }
}