import itertools

def main():
  n, m, w = [int(x) for x in input().split()]
  a = [int(x) for x in input().split()]
  b = [int(x) for x in input().split()]
  c = [int(x) for x in input().split()]
  a.sort(reverse=True)
  ac = list(itertools.accumulate(a))
  bc = [[bc_i, (0, 0)] for bc_i in zip(b, c)]
  ans = 0
  for ch in itertools.product(*bc):
    cap = 0
    val = 0
    for bi, ci in ch:
      cap += bi
      val += ci
      if cap > w:
        break
    if cap <= w:
      val += ac[min(n, w - cap)]
      ans = max(ans, val)

  print(ans)

if __name__ == "__main__":
  main()