#![allow(unused_imports)]
//use itertools::{iproduct, Itertools};
use proconio::input;
use proconio::marker::*;
use std::collections::*;

fn main() {
    input! {
        n:usize,
        m:usize,
        w:usize,
        mut a:[usize;n],
        b:[usize;m],
        c:[usize;m],
    }

    a.sort_by(|a, b| b.cmp(a));
    let mut cum_a = vec![0;n+1];
    for i in 0..n{
        cum_a[i+1]=cum_a[i]+a[i];
    }

    let mut ans = 0;
    for i in 0..1 << m {
        let mut sum_v = 0;
        let mut sum_w = 0;
        for j in 0..m {
            if i & (1 << j) == 0 {
                continue;
            }

            sum_v += c[j];
            sum_w += b[j];
        }

        if sum_w <= w {
            sum_v += cum_a[(w - sum_w).min(n)];
            ans = ans.max(sum_v);
        }
    }

    println!("{}", ans);
}