use proconio::input;

fn main() {
    input! {
        n: usize,
        d: usize,
        k: usize,
        a: [isize; n],
        c: [usize; n],
    }

    let mut dp = vec![vec![vec![isize::MIN; k + 1]; d + 1]; n];
    dp[0][0][0] = 0;
    dp[0][1][c[0].min(k)] = a[0];

    for i in 0..n - 1 {
        for j in 0..d {
            for l in 0..k + 1 {
                if dp[i][j][l] == isize::MIN {
                    continue;
                }

                dp[i + 1][j][l] = dp[i + 1][j][l].max(dp[i][j][l]);
                dp[i + 1][j + 1][(l + c[i + 1]).min(k)] =
                    dp[i + 1][j + 1][(l + c[i + 1]).min(k)].max(dp[i][j][l] + a[i + 1]);
            }
        }
    }

    let mut ans = isize::MIN;
    for i in 0..n {
        for j in 0..d + 1 {
            ans = ans.max(dp[i][j][k]);
        }
    }

    if ans == isize::MIN {
        println!("No");
    } else {
        println!("{}", ans);
    }
}