#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> P;
#define REP(i,n) for(int i=0;i<int(n);i++)


int main(void){
	cin.tie(nullptr);  ios_base::sync_with_stdio(false);
	ll i,j,k;

	ll N,A,B,C;
	cin >> N >> A >> B >> C;

	ll t=N/10,D=0;
	for(i=0;i<=t;i++){
		ll z=N-10*i;
		for(j=(3*z+4)/5;j<=2*z/3;j++){
			D=max(D,(5*j-3*z)*A+(-3*j+2*z)*B+C*i);
		}

	}

	cout << D << endl;



	return 0;
}