#include <iostream>
#include <vector>

constexpr int INF = 1 << 30;
constexpr int MOD = 1000;

void solve() {
    int n;
    std::cin >> n;

    std::vector<int> xs(n);
    for (auto& x : xs) std::cin >> x;

    std::vector<int> dp(1 << n, INF);
    dp[0] = 0;

    for (int b = 0; b < (1 << n); ++b) {
        int sum = 0;
        for (int i = 0; i < n; ++i) {
            if ((b >> i) & 1) sum += xs[i];
        }
        sum %= MOD;

        for (int i = 0; i < n; ++i) {
            if ((b >> i) & 1) continue;
            dp[b | (1 << i)] = std::min(dp[b | (1 << i)],
                                        dp[b] + std::max(0, xs[i] - sum));
        }
    }

    std::cout << dp.back() << "\n";
}

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

    solve();

    return 0;
}