use proconio::input;
fn main() {
    input!{
        n: usize,
        d: usize,
        k: usize,
        a: [i64;n],
        c: [usize;n]
    }
    let mut dp= vec![vec![-1<<60;d+1];k+1];
    dp[0][0] = 0;
    for i in 0..n{
        let mut ndp= dp.clone();
        for j in 0..=k{
            for i2 in 0..d{
                if dp[j][i2] == -1<<60{continue;}
                ndp[(j+c[i]).min(k)][i2+1] = ndp[(j+c[i]).min(k)][i2+1].max(dp[j][i2] + a[i])
            }
        }
        dp = ndp
    }
    println!("{}",if dp[k][d] == -1<<60 {"No".to_string()} else {dp[k][d].to_string()})
}