def knapsack(N, M, W, A, B, C):
    dp = [0] * (W + 1)
    for i in range(N):
        for w in range(W, 0, -1):
            if w - 1 >= 0:
                dp[w] = max(dp[w], dp[w - 1] + A[i])

    items = list(zip(B, C))
    items.sort()

    for i in range(M):
        b, c = items[i]
        for w in range(W, b - 1, -1):
            dp[w] = max(dp[w], dp[w - b] + c)

    return dp[W]
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()))
print(knapsack(N, M, W, A, B, C))