#include <iostream>
#include <vector>

int main() {
	int n, a, b, c;
	std::cin >> n >> a >> b >> c;
	std::vector<int> dp(n+100);
	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);
	}
	std::cout << dp[n] << '\n';
}