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

public class Main {
    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);
        int[] weight = new int[m];
        for (int i = 0; i < m; i++) {
            weight[i] = sc.nextInt();
        }
        TreeMap<Long, Long> worth = new TreeMap<>();
        worth.put(0L, 0L);
        for (int i = 0; i < m; i++) {
            int x = sc.nextInt();
            Long key = Long.MAX_VALUE;
            while ((key = worth.lowerKey(key)) != null) {
                if (worth.floorEntry(key + weight[i]).getValue() >= worth.get(key) + x) {
                    continue;
                }
                worth.put(key + weight[i], worth.get(key) + x);
                Long current = key + weight[i];
                while ((current = worth.higherKey(current)) != null) {
                    if (worth.get(current) <= worth.get(key) + x) {
                        worth.remove(current);
                    } else {
                        break;
                    }
                }
            }
        }
        long ans = worth.floorEntry(w).getValue();
        long current = 0;
        for (int i = 1; i <= n && i <= w; i++) {
            current += values[n - i];
            ans = Math.max(ans, worth.floorEntry(w - i).getValue() + current);
        }
        System.out.println(ans);
    }
}
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();
        }
    }
    
}