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 i in range(1<<N):
    w = 0
    v = 0
    for k in range(N):
        if (i>>k)&1:
            w += A[k]
            v += B[k]
    for j in range(1<<M):
        w0 = w
        v0 = v
        for l in range(M):
            if (j>>l)&1:
                w0 -= C[l]
                v0 -= D[l]
        if w0<=W:
            ans = max(ans,v0)
print(ans)