import sys
from collections import deque, Counter
from math import gcd, log10, pi, sqrt, ceil
from bisect import bisect, bisect_left, bisect_right, insort
from typing import Iterable, TypeVar, Union, Tuple, Iterator, List
# import bisect
import copy
import heapq
import itertools
import math
import random
from fractions import Fraction
from functools import lru_cache, partial, cmp_to_key
import operator
# import pypyjit
# pypyjit.set_param('max_unroll_recursion=-1')
# import string
# import networkx as nx
input = sys.stdin.readline
sys.setrecursionlimit(10000000)
# mod = 10 ** 9 + 7
mod = 998244353
# mod = 1 << 128
# mod = 10 ** 30 + 1
INF = 1 << 61
DIFF = 10 ** -9
DX = [1, 0, -1, 0, 1, 1, -1, -1]
DY = [0, 1, 0, -1, 1, -1, 1, -1]

def read_values(): return tuple(map(int, input().split()))
def read_index(): return tuple(map(lambda x: int(x) - 1, input().split()))
def read_list(): return list(read_values())
def read_lists(N): return [read_list() for _ in range(N)]


def main():
    N = int(input())
    A, B, C = read_values()

    dp = [0] * (N + 1)
    for i in range(N):
        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)
        dp[i + 1] = max(dp[i + 1], dp[i])

    print(dp[-1])


if __name__ == "__main__":
    main()