from itertools import product

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 pr1 in product((0, 1), repeat=N):
    for pr2 in product((0, 1), repeat=M):
        Wc = []
        wi, vi = 0, 0
        for i in range(N):
            if pr1[i]:
                Wc.append(A[i])
                vi += B[i]
        for i in range(M):
            if pr2[i]:
                Wc.append(-C[i])
                vi -= D[i]
        Wc.sort()
        l, r = 0, len(Wc) - 1
        while l <= r:
            # print(l, r, Wc)
            if 0 <= Wc[l] + wi <= W:
                wi += Wc[l]
                l += 1
                continue
            elif 0 <= Wc[r] + wi <= W:
                wi += Wc[r]
                r -= 1
                continue
            else:
                break
        if l > r:
            ans = max(ans, vi)
        # print(pr1, pr2, l == r, ans, Wc)
print(ans)