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()]

WV = []

for x, y in zip(a, b):
    WV.append((x, y))

for x, y in zip(c, d):
    WV.append((x, y))

def solve(WV, w):
    n = len(WV)
    dp = [[-inf] * (w + 1) for _ in range(n + 1)]

    dp[0][0] = 0

    for i in range(n):
        x, y = WV[i]
        for j in range(w + 1):
            if 0 <= j + x <= w:
                dp[i + 1][j + x] = max(dp[i + 1][j + x], dp[i][j] + y)
            dp[i + 1][j] = max(dp[i][j], dp[i + 1][j])
    return max(dp[n])
ans = 0
while time.time() - t1 <= 1.7:
    random.shuffle(WV)
    ans = max(ans, solve(WV, w))

print(ans)