#include <iostream>
#include <algorithm>
#include <cstdio>

using namespace std;

const int MAX_N = 16;
const int INF = 1930000000;

int dp[1 << MAX_N];
int goods[16] = {0};
int main(){
    int n,sub_total = 0,tmp = 0;

    for(int i = 0; i < 1 << MAX_N; i++){
        dp[i] = INF;
    }
    cin >> n;
    dp[0] = 0;
    for(int i = 0; i < n; i++){ 
        cin >> goods[i];
        dp[1 << i] = goods[i];
    }
    
    for(int i = 0; i < (1 << n); i++){
        for (int j = 0; j < n; j++){
            if((i >> j) & 1){//現在のiのパターンでの定価の合計を求める
                sub_total += goods[j];
            }
        }
        for(int j = 0; j < n; j++){
            if( !((i >> j) & 1) ){//j番目の商品を含んでいない。
                if(goods[j] - (sub_total % 1000) > 0) tmp = goods[j] - (sub_total % 1000);
                else tmp = 0;

                dp[i | 1 << j] = min(dp[i | 1 << j], dp[i] + tmp);
            }
        }
        sub_total = 0;
    }
  
    cout << dp[(1 << n) - 1] << endl;
    return 0;
}