#include<bits/stdc++.h>
#define rep(i,n,m) for(int i = (n); i <(m); i++)
#define rrep(i,n,m) for(int i = (n) - 1; i >=(m); i--)
#define chmin(a,b) a = min((a),(b))
using namespace std;
using ll = long long;
const int MAX_S = 1 << 17;
const int INF = 1000000000;

int main()
{
    int n;
    cin >> n;
    vector<int> money(n);
    rep(i, 0, n) cin >> money[i];

    vector<vector<int>> dp(n+1, vector<int>(MAX_S, INF));
    dp[0][0] = 0;
    rep(i, 0, n)
        rep(prev, 0, MAX_S)
            rep(j, 0, n)
            if ((prev & (1 << j)) == 0 and dp[i][prev] != INF)
            {
                int next = prev | (1 << j);
                int prev_cost = 0;
                rep(k, 0, n)
                if ((1 << k) & prev)
                    prev_cost += money[k];
                
                chmin(dp[i+1][next], dp[i][prev] + max(0, money[j] - (prev_cost % 1000)));
                // cout << i << ' ' <<  next << ' ' << prev << ' ' << dp[i+1][next] << endl;
            }
        
    int state = (1 << n) - 1;
    cout << dp[n][state] << endl;
    // cout << cost << endl;
    return 0;
}