l1 = list(map(int, input().split()))
*l2, T = map(int, input().split())

l3 = []
for a, b in zip(l1, l2):
  l3.append((b, a))
l3.sort()

ans = 0
for i in range(4):
  t, a = l3[i]
  if T - a*t >= 0:
    T -= a*t
    ans += a
  else:
    b = T//t
    ans += b
    break
print(ans)