#define _USE_MATH_DEFINES
#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <queue>
#include <math.h>
#include <cmath>
#include <stack>
#include <map>
#include <set>
#include <numeric>
#include <iomanip>
#include <climits>
#include <functional>
#include <cassert>
#include <tuple>
using namespace std;
using ll = long long;

int N;
int A, B, C;

int main() {

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

    cout << dp[N] << endl;

}