#include <cstdio>
#include <vector>
#define repeat(i,n) for (int i = 0; (i) < (n); ++(i))
using namespace std;
template <class T> void setmin(T & a, T const & b) { if (b < a) a = b; }
const int inf = 1e9+7;
const int K = 1000;
int main() {
    int n; scanf("%d", &n);
    vector<int> m(n); repeat (i,n) scanf("%d", &m[i]);
    vector<int> dp(1<<n, inf);
    dp[0] = 0;
    repeat (s,1<<n) {
        int acc = 0; repeat (i,n) if (s & (1<<i)) acc += m[i];
        repeat (i,n) if (s & (1<<i)) {
            int t = s & ~ (1<<i);
            setmin(dp[s], dp[t] + max(0, m[i] - (acc - m[i]) % K));
        }
    }
    printf("%d\n", dp[(1<<n) - 1]);
    return 0;
}