#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long ull;
typedef long double ld;
int dx[8] = { 1, 0, -1, 0, 1, 1, -1, -1 }, dy[8] = { 0, 1, 0, -1, 1, -1, 1, -1 };
const long long mod = 998244353;
const ll inf = 1LL << 60;
const int INF = 1e9 + 1;

int main()
{
    int n;
    cin >> n;
    int a, b, c;
    cin >> a >> b >> c;

    int x = max({ 10 * a, 6 * b, 3 * c });
    if (n <= 30) {
        int ans = 0;
        ans += n / 30 * x;
        n %= 30;

        int plus = 0;
        for (int i = 0; i < 20; i++) {
            for (int j = 0; j < 12; j++) {
                for (int k = 0; k < 6; k++) {
                    int sum = 0;
                    if (3 * i + 5 * j + 10 * k > n)
                        continue;
                    sum = i * a + j * b + k * c;
                    plus = max(plus, sum);
                }
            }
        }
        cout << ans + plus << endl;
        return 0;
    }
    int ans = 0;
    ans += (n - 30) / 30 * x;
    n %= 30;
    n += 30;

    int plus = 0;
    for (int i = 0; i < 20; i++) {
        for (int j = 0; j < 12; j++) {
            for (int k = 0; k < 6; k++) {
                int sum = 0;
                if (3 * i + 5 * j + 10 * k > n)
                    continue;
                sum = i * a + j * b + k * c;
                plus = max(plus, sum);
            }
        }
    }
    cout << ans + plus << endl;
}