from itertools import product, 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 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])
                wi += A[i]
                vi += B[i]
        for i in range(M):
            if pr2[i]:
                Wc.append(-C[i])
                wi -= C[i]
                vi -= D[i]
        if wi < 0 or W < wi:
            continue
        for per in permutations(Wc):
            wk = 0
            flag = True
            for p in per:
                wk += p
                if wk < 0 or W < wk:
                    flag = False
                    continue
            if flag:
                ans = max(ans, vi)
                break
print(ans)