#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long ull;
typedef long double ld;
int dx[8]={1,0,-1,0,1,1,-1,-1},dy[8]={0,1,0,-1,1,-1,1,-1};
const long long mod = 998244353;
const ll inf = 1LL<<60;
const int INF = 1e9+1;



int main(){
    int n;cin >> n;
    int a,b,c;cin >> a >> b >> c;

    int x = max({10*a,6*b,3*c});
    int ans = 0;
    ans += n/30*x;
    n %= 30;

    int plus = 0;
    for(int i=0;i<10;i++){
        for(int j=0;j<6;j++){
            for(int k=0;k<3;k++){
                int sum = 0;
                if(3*i+5*j+10*k>n)continue;
                sum = i*a+j*b+k*c;
                plus = max(plus,sum);
            }
        }
    }
    cout << ans + plus << endl;
}