use std::collections::HashMap;

fn main() {
    let (n, m) = input_tuple::<usize>();
    let a_org = input_vec::<isize>();
    let b = input_vec();
    let c = input_vec::<isize>();

    let mut a = a_org.clone();

    let mut list = vec![0; n];

    for i in 1..n {
        if a[i] - a[i - 1] != b[(i - 1) % m] {
            list[i] = b[(i - 1) % m] + a[i - 1] - a[i];

            a[i] = b[(i - 1) % m] + a[i - 1];
        }
    }

    // println!("{:?}", list);

    let mut counter = HashMap::new();

    for i in 0..n {
        *counter.entry(list[i]).or_insert(0) += 1;
    }

    let (&_, &max_value) = counter.iter().max().unwrap();

    let mut max_index = 0;

    for i in 0..n {
        if list[i] == max_value {
            max_index = i;
            break;
        }
    }

    max_index += 1;

    eprintln!("max {}", max_index);

    // let mut result_1 = 0;

    // let mut a = a_org.clone();

    // for i in 1..n {
    //     if a[i] - a[i - 1] != b[(i - 1) % m] {
    //         a[i] = b[(i - 1) % m] + a[i - 1];

    //         result_1 += c[i];
    //     }
    // }

    // println!("{:?}", a);

    // println!("{}", result_1);

    // let mut result_2 = 0;

    // let mut a = a_org.clone();

    // for i in (0..n - 1).rev() {
    //     if a[i + 1] - a[i] != b[i % m] {
    //         a[i] = a[i + 1] - b[i % m];

    //         result_2 += c[i];
    //     }
    // }

    // // println!("{:?}", a);

    // println!("{}", result_2);

    let mut result_3 = 0;

    let mut a = a_org.clone();

    for i in max_index..n {
        if a[i] - a[i - 1] != b[(i - 1) % m] {
            a[i] = b[(i - 1) % m] + a[i - 1];

            result_3 += c[i];
        }
    }

    for i in (0..max_index - 1).rev() {
        if a[i + 1] - a[i] != b[i % m] {
            a[i] = a[i + 1] - b[i % m];

            result_3 += c[i];
        }
    }

    // println!("{:?}", a);

    println!("{}", result_3);
}

fn input_tuple<T>() -> (T, T)
where
    T: std::str::FromStr,
    <T as std::str::FromStr>::Err: std::fmt::Debug,
{
    let stdin = std::io::stdin();

    let mut buf = String::new();
    stdin.read_line(&mut buf).unwrap();
    buf = buf.trim_end().to_owned();

    let mut iter = buf.split_whitespace();

    let n = iter.next().unwrap().parse().unwrap();
    let m = iter.next().unwrap().parse().unwrap();

    (n, m)
}

fn input_vec<T>() -> Vec<T>
where
    T: std::str::FromStr,
    <T as std::str::FromStr>::Err: std::fmt::Debug,
{
    let stdin = std::io::stdin();

    let mut buf = String::new();
    stdin.read_line(&mut buf).unwrap();
    buf = buf.trim_end().to_owned();

    let iter = buf.split_whitespace();

    let line = iter.map(|x| x.parse().unwrap()).collect();

    line
}