# import pypyjit;pypyjit.set_param("max_unroll_recursion=-1")
# from bisect import *
# from collections import *
# from heapq import *
# from itertools import *
# from math import *
# from datetime import *
# from decimal import *  # PyPyだと遅い
# from string import ascii_lowercase,ascii_uppercase
# import numpy as np
import sys

# sys.setrecursionlimit(10**6) # PyPyだと遅い
INF = 10**18
MOD = 998244353
# MOD = 10**9 + 7
File = sys.stdin


def input():
    return File.readline()[:-1]


# ///////////////////////////////////////////////////////////////////////////


N = int(input())
A, B, C = map(int, input().split())

dp = [-1] * (N + 1)
dp[0] = 0
l = [(3, A), (5, B), (10, C)]
for i in range(1, N + 1):
    for j, k in l:
        if i - j >= 0 and dp[i - j] != -1:
            dp[i] = max(dp[i], dp[i - j] + k)

print(max(dp))