#include <bits/stdc++.h>

#define show(x) cerr << #x << " = " << x << endl

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;

template <typename T>
ostream& operator<<(ostream& os, const vector<T>& v)
{
    os << "sz=" << v.size() << "\n[";
    for (const auto& p : v) {
        os << p << ",";
    }
    os << "]\n";
    return os;
}

template <typename S, typename T>
ostream& operator<<(ostream& os, const pair<S, T>& p)
{
    os << "(" << p.first << "," << p.second
       << ")";
    return os;
}


constexpr ll MOD = 1e9 + 7;

template <typename T>
constexpr T INF = numeric_limits<T>::max() / 100;

ll buy(ll prevsum, ll price)
{
    const ll disc = prevsum % 1000;
    return (price >= disc) ? price - disc : 0;
}

int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);

    int N;
    cin >> N;
    vector<int> m(N);
    for (ll i = 0; i < N; i++) {
        cin >> m[i];
    }

    const ll maximum = 1LL << N;
    vector<ll> sum(maximum, 0);
    sum[0] = 0;
    for (ll i = 1; i < maximum; i++) {
        for (ll d = 0; d < N; d++) {
            if ((i >> d) % 2 == 1) {
                sum[i] += m[d];
            }
        }
    }

    vector<ll> ans(maximum, INF<ll>);
    ans[0] = 0;
    for (ll i = 1; i < maximum; i++) {
        for (ll d = 0; d < N; d++) {
            if ((i >> d) % 2 == 1) {
                ans[i] = min(ans[i], ans[i - (1LL << d)] + buy(sum[i - (1LL << d)], m[d]));
            }
        }
    }
    cout << ans[maximum - 1] << endl;


    return 0;
}