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

max_total = 0

max_z = n // 10
for z in range(0, max_z + 1):
    r = n - 10 * z
    if r < 0:
        continue
    max_y = r // 5
    y_candidates = set()
    # Add lower candidates (0-4)
    for y in range(0, 5):
        if y <= max_y:
            y_candidates.add(y)
    # Add upper candidates (max_y-4 to max_y)
    start = max(0, max_y - 4)
    for y in range(start, max_y + 1):
        y_candidates.add(y)
    best = 0
    for y in y_candidates:
        remaining = r - 5 * y
        if remaining < 0:
            continue
        x = remaining // 3
        current = b * y + a * x
        if current > best:
            best = current
    total = c * z + best
    if total > max_total:
        max_total = total

print(max_total)