#include <bits/stdc++.h>
#define int long long
int n, a, b, c, ans, tmp;
signed main(){
	scanf("%lld", &n);
	scanf("%lld%lld%lld", &a, &b, &c);
	ans = n / 30 * std::max(10 * a, std::max(6 * b, 3 * c));
	n = n % 30;
	for(int i = 0;3 * i <= n;i++){
		for(int j = 0;3 * i + 5 * j <= n;j++){
			for(int k = 0;3 * i + 5 * j + 10 * k <= n;k++){
				tmp = std::max(tmp, i * a + j * b + k * c);
			}
		}
	}
	printf("%lld", ans + tmp);
	return 0;
}