#include <bits/stdc++.h>
using namespace std::literals::string_literals;
using i64 = std::int_fast64_t;
using std::cout;
using std::cerr;
using std::endl;
using std::cin;

#if defined(DONLINE_JUDGE)
	#define NDEBUG
#elif defined(ONLINE_JUDGE)
	#define NDEBUG
#endif

template<typename T> std::vector<T> make_v(size_t a){return std::vector<T>(a);}
template<typename T, typename... Ts> auto make_v(size_t a, Ts... ts){
  return std::vector<decltype(make_v<T>(ts...))>(a, make_v<T>(ts...));
}

int main() {
	int n, a, b, c; scanf("%d%d%d%d", &n, &a, &b, &c);

	std::vector<int> dp(n + 11);
	for (int i = 0; i < n; ++i) {
		dp[i + 3] = std::max(dp[i + 3], dp[i] + a);
		dp[i + 5] = std::max(dp[i + 5], dp[i] + b);
		dp[i + 10] = std::max(dp[i + 10], dp[i] + c);
	}

	printf("%lld\n", *std::max_element(dp.begin(), dp.begin() + (n + 1)));
	return 0;
}