#include <bits/stdc++.h>

using namespace std;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    const int INF = 1000000;
    int n, s, dp[1 << 15][15];
    cin >> n;
    vector<int> m(n);
    s = 1 << n;
    for (int i = 0; i < n; i++) {
        cin >> m[i];
        for (int j = 0; j < s; j++) dp[j][i] = INF;
        dp[1 << i][i] = m[i];
    }
    for (int i = 1; i < s; i++) {
        for (int j = 0; j < n; j++) {
            if (i & (1 << j)) continue;
            int sum = 0, tmp = INF;
            for (int k = 0; k < n; k++) {
                if (!(i & (1 << k))) continue;
                sum += m[k];
                tmp = min(tmp, dp[i][k]);
            }
            dp[i | (1 << j)][j] = tmp + max(m[j] - sum % 1000, 0);
        }
    }
    int ans = INF;
    for (int i = 0; i < n; i++) ans = min(ans, dp[s - 1][i]);
    cout << ans << "\n";
    return 0;
}