N, M, W = list(map(int, input().split()))
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
D = list(map(int, input().split()))
ans = 0
import itertools
for n in itertools.permutations(range(N), N):
  for m in itertools.permutations(range(M), M):
    w = 0
    v = 0
    ni = 0
    mi = 0
    while True:
      while ni < N:
        if w + A[n[ni]] > W:
          break
        w += A[n[ni]]
        v += B[n[ni]]
        ni += 1
      ans = max(ans, v)
      if mi == M: break
      if w - C[m[mi]] < 0: break
      w -= C[m[mi]]
      v -= D[m[mi]]
      mi += 1
      if ni == N: break
print(ans)