from itertools import permutations
N, M, W = 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
for s in permutations(range(N)):
    for t in permutations(range(M)):
        i, j = 0, 0
        w = 0
        v = 0
        # print(list(s), list(t))
        while True:
            # print((w, v), (i, j))
            if i < N and w+A[s[i]] <= W:
                w += A[s[i]]
                v += B[s[i]]
                ans = max(ans, v)
                i += 1
                continue
            if j < M and w - C[t[j]] >= 0:
                w -= C[t[j]]
                v -= D[t[j]]
                ans = max(ans, v)
                j += 1
                continue
            break
        # print((w, v), (i, j))
print(ans)