#pragma GCC target("avx,avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")


#define _USE_MATH_DEFINES

#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <list>
#include <queue>
#include <unordered_map>
#include <unordered_set>
#include <algorithm>
#include <functional>
#include <climits>
#include <cmath>
#include <utility>
#include <iomanip>
#include <chrono>
#include <random>
#include <memory>
#include <cstdlib>
#include <cstring>
#include <cmath>
//#include <boost/multiprecision/cpp_int.hpp>
#include <memory>



using namespace std;
using ll = long long int;
//// 任意長整数型
//namespace mp = boost::multiprecision;
//using Bint = mp::cpp_int;


int main()
{
	//input
	int N;
	cin >> N;
	int A, B, C;
	cin >> A >> B >> C;

	vector<int> dp(N + 1);
	for (int i = 0; i < N + 1; ++i) {
		dp[i] = 0;
	}

	for (int index = N; 0 <= index; --index) {
		if (3 <= index) {
			dp[index - 3] = max(dp[index - 3], dp[index] + A);
		}

		if (5 <= index) {
			dp[index - 5] = max(dp[index - 5], dp[index] + B);
		}

		if (10 <= index) {
			dp[index - 10] = max(dp[index - 10], dp[index] + C);
		}

	}


	int ans = 0;
	for (int i = 0; i < 10; ++i) {
		ans = max(ans, dp[i]);
	}

	//ans
	cout << ans << endl;


	return 0;
}