n, m, w = [int(x) for x in input().split()]
a = list(map(int, input().split()))
b = [1 for _ in range(len(a))]
c = list(map(int, input().split()))
d = list(map(int, input().split()))
def knapsack(wt, val, W, n):
    if n == 0 or W == 0:
        return 0
    if t[n][W] != -1:
        return t[n][W]
    if wt[n-1] <= W:
        t[n][W] = max(
            val[n-1] + knapsack(
                wt, val, W-wt[n-1], n-1),
            knapsack(wt, val, W, n-1))
        return t[n][W]
    elif wt[n-1] > W:
        t[n][W] = knapsack(wt, val, W, n-1)
        return t[n][W]
value = a + d
weight = b + c
n += m
t = [[-1 for i in range(w + 1)] for j in range(n + 1)]
print(knapsack(weight, value, w, n))