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