#include <bits/stdc++.h>
using namespace std;

int main() {
	int N, A, B, C;
	cin >> N >> A >> B >> C;
	vector<int> dp(N + 1);
	for (int i = N; i >= 0; i--){
		if (i - 3 >= 0){
			dp[i - 3] = max(dp[i - 3], dp[i] + A);
		}
		if (i - 5 >= 0){
			dp[i - 5] = max(dp[i - 5], dp[i] + B);
		}
		if (i - 10 >= 0){
			dp[i - 10] = max(dp[i - 10], dp[i] + C);
		}
	}
	cout << dp[0] << '\n';
}