from itertools import permutations
n,m,k = 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 px in permutations(range(n)):
    for py in permutations(range(m)):
        i = j = w = v = 0
        while i<n or j<m:
            if i<n and w+a[px[i]]<=k: w += a[px[i]]; v += b[px[i]]; i += 1
            elif j<m and 0<=w-c[py[j]]: w -= c[py[j]]; v -= d[py[j]]; j += 1
            else: break
            ans = max(ans,v)
print(ans)