#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll,ll>;
#define fix(x) fixed << setprecision(x)
#define asc(x) x, vector<x>, greater<x>
#define rep(i, n) for(ll i = 0; i < n; i++)
#define all(x) (x).begin(),(x).end()
template<class T>bool chmin(T&a, const T&b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool chmax(T&a, const T&b){if(a<b){a=b;return 1;}return 0;}
constexpr ll INFLL = (1LL << 62), MOD = 998244353;
constexpr int INF = (1 << 30);

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    ll n,a,b,c;
    cin >> n >> a >> b >> c;
    ll ans = max(a*10, c*3)*(n/30);
    vector<ll> dp(50,0);
    n %= 30;
    rep(i,n){
        chmax(dp[i+3], dp[i]+a);
        chmax(dp[i+5], dp[i]+b);
        chmax(dp[i+10], dp[i]+c);
    }
    cout << dp[n]+ans << '\n';
    return 0;
}