n = int(input())
a, b, c = map(int, input().split())

DP = [-1 for _ in range(n + 1)]
DP[n] = 0
for i in range(n, -1, -1):
    if DP[i] == -1:
        continue
    if i - 3 >= 0:
        DP[i - 3] = max(DP[i - 3], DP[i] + a)
    if i - 5 >= 0:
        DP[i - 5] = max(DP[i - 5], DP[i] + b)
    if i - 10 >= 0:
        DP[i - 10] = max(DP[i - 10], DP[i] + c)
print(max(DP))