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

ans = N//30 * max(A * 10, B * 6, C * 3)
N %= 30
temp = 0
for a in range(11):
    for b in range(7):
        for c in range(4):
            if 3 * a + 5 * b + 10 * c > N:
                continue
            temp = max(temp, A * a + B * b + C * c)
print(ans + temp)