#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  int n, a, b, c;
  cin >> n >> a >> b >> c;
  vector<int> memo(n + 1, -1);
  auto dfs = [&](auto &&self, int x) -> int {
    if (x == 0) return 0;
    if (memo[x] != -1) return memo[x];
    int res = 0;
    if (x >= 3) res = max(res, self(self, x - 3) + a);
    if (x >= 5) res = max(res, self(self, x - 5) + b);
    if (x >= 10) res = max(res, self(self, x - 10) + c);
    return memo[x] = res;
  };
  cout << dfs(dfs, n) << endl;
  return 0;
}