#include <bits/stdc++.h>
using namespace std;
#ifdef tabr
#include "library/debug.cpp"
#else
#define debug(...)
#endif

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    long long n;
    cin >> n;
    vector<pair<int, int>> c(3);
    c[0].first = 3;
    c[1].first = 5;
    c[2].first = 10;
    for (int i = 0; i < 3; i++) {
        cin >> c[i].second;
    }
    sort(c.begin(), c.end(), [&](auto x, auto y) {
        return x.second * y.first < y.second * x.first;
    });
    vector<long long> a(3), b(3);
    for (int i = 0; i < 3; i++) {
        a[i] = c[i].first;
        b[i] = c[i].second;
    }
    long long ans = 0;
    for (int i = 0; i < 2023; i++) {
        for (int j = 0; j < 2023; j++) {
            if (a[0] * i + a[1] * j > n) {
                break;
            }
            ans = max(ans, b[0] * i + b[1] * j + b[2] * ((n - a[0] * i - a[1] * j) / a[2]));
        }
    }
    cout << ans << '\n';
    return 0;
}