import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

public class Main {
    static int[] worth;
    static int[] weight;
    static List<Map<Long, Long>> dp = new ArrayList<>();
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int m = sc.nextInt();
        long w = sc.nextLong();
        int[] values = new int[n];
        for (int i = 0; i < n; i++) {
            values[i] = sc.nextInt();
        }
        Arrays.sort(values);
        weight = new int[m];
        for (int i = 0; i < m; i++) {
            weight[i] = sc.nextInt();
        }
        worth = new int[m];
        for (int i = 0; i < m; i++) {
            worth[i] = sc.nextInt();
            dp.add(new HashMap<>());
        }
        long ans = dfw(m - 1, w);
        long current = 0;
        for (int i = 1; i <= n; i++) {
            current += values[n - i];
            ans = Math.max(ans, dfw(m - 1, w - i) + current);
        }
        System.out.println(ans);
    }
    
    static long dfw(int idx, long v) {
        if (v < 0) {
            return Long.MIN_VALUE;
        }
        if (idx < 0) {
            return 0;
        }
        if (!dp.get(idx).containsKey(v)) {
            dp.get(idx).put(v, Math.max(dfw(idx - 1, v), dfw(idx - 1, v - weight[idx]) + worth[idx]));
        }
        return dp.get(idx).get(v);
    }
}
class Scanner {
    BufferedReader br;
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
        } catch (Exception e) {
            
        }
    }
    
    public int nextInt() {
        return Integer.parseInt(next());
    }
    
    public long nextLong() {
        return Long.parseLong(next());
    }
    
    public double nextDouble() {
        return Double.parseDouble(next());
    }
    
    public String next() {
        try {
            while (!st.hasMoreTokens()) {
                st = new StringTokenizer(br.readLine());
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            return st.nextToken();
        }
    }
    
}