#include <iostream>
#include <vector>

#define  NUM_OF(arr)   (sizeof(arr)/sizeof(*arr))

using namespace std;

int main()
{
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    const int cost[] = { 3, 5, 10 };
    int N, discount[NUM_OF(cost)], i, j;
    cin >> N;
    for (i = 0; i != NUM_OF(cost); ++i) cin >> discount[i];

    vector<int> dp(N + 1, 0);
    dp[0] = 0;
    for (i = 0; i != N; ++i)
    {
        for (j = 0; j != NUM_OF(cost) && i + cost[j] <= N; ++j)
            if (dp[i] + discount[j] > dp[i + cost[j]])
                dp[i + cost[j]] = dp[i] + discount[j];
        if (dp[i] > dp[i + 1])
            dp[i + 1] = dp[i];
    }

    cout << dp[N] << '\n';
    return 0;
}