import sys, time, random
from collections import deque, Counter, defaultdict
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
inf = 2 ** 63 - 1
mod = 998244353
import time
t1 = time.time()
n, m, w = mi()

a = li()
b = li()
c = [-v for v in li()]
d = [-v for v in li()]
ans = 0
import itertools
for bit1 in range(1 << n):
    for bit2 in range(1 << m):
        WV = [(0, 0)]
        for i in range(n):
            if 1 & (bit1 >> i):
                WV.append((a[i], b[i]))
        WIS = [(0, 0)]
        for i in range(m):
            if 1 & (bit2 >> i):
                WIS.append((c[i], d[i]))
        
        for WIS in itertools.permutations(WIS):
            j = 0
            noww = 0
            nowv = 0
            for x, y in WV:
                noww += x
                nowv += y
                if noww > w:
                    nowv = -inf
                    break
                if j < len(WIS) and WIS[j][0] <= noww:
                    noww += WIS[j][0]
                    nowv += WIS[j][1]
                    j += 1
            ans = max(ans, nowv)
print(ans)