#[macro_use]
mod input_mcr {
    // ref: tanakh <https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8>
    // diff: using Parser
    #[macro_export(local_inner_macros)]
    macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut parser = Parser::from_str($s);
        input_inner!{parser, $($r)*}
    };
    (parser = $parser:ident, $($r:tt)*) => {
        input_inner!{$parser, $($r)*}
    };
    (new_stdin_parser = $parser:ident, $($r:tt)*) => {
        let stdin = std::io::stdin();
        let reader = std::io::BufReader::new(stdin.lock());
        let mut $parser = Parser::new(reader);
        input_inner!{$parser, $($r)*}
    };
    ($($r:tt)*) => {
        input!{new_stdin_parser = parser, $($r)*}
    };
}

    #[macro_export(local_inner_macros)]
    macro_rules! input_inner {
    ($parser:ident) => {};
    ($parser:ident, ) => {};
    ($parser:ident, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($parser, $t);
        input_inner!{$parser $($r)*}
    };
}

    #[macro_export(local_inner_macros)]
    macro_rules! read_value {
    ($parser:ident, ( $($t:tt),* )) => {
        ( $(read_value!($parser, $t)),* )
    };
    ($parser:ident, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($parser, $t)).collect::<Vec<_>>()
    };
    ($parser:ident, chars) => {
        read_value!($parser, String).chars().collect::<Vec<char>>()
    };
    ($parser:ident, char_) => {
        read_value!($parser, String).chars().collect::<Vec<char>>()[0]
    };
    ($parser:ident, usize1) => {
        read_value!($parser, usize) - 1
    };
    ($parser:ident, line) => {
        $parser.next_line()
    };
    ($parser:ident, line_) => {
        $parser.next_line().chars().collect::<Vec<char>>()
    };
    ($parser:ident, i64_) => {
        $parser.fast_i64()
    };
    ($parser:ident, usize_) => {
        $parser.fast_i64() as usize
    };
    ($parser:ident, usize1_) => {
        ($parser.fast_i64() - 1) as usize
    };
    ($parser:ident, $t:ty) => {
        $parser.next::<$t>().expect("Parse error")
    };
}

    use std::io;
    use std::io::BufRead;
    use std::str;

    // ref: tatsuya6502 <https://qiita.com/tatsuya6502/items/cd448486f7ef7b5b8c7e>
    // ref: wariuni <https://qiita.com/tatsuya6502/items/cd448486f7ef7b5b8c7e#comment-7040a5ae96305e884eb9>
    // diff: using std::io::BufRead::fill_buf()
    pub struct Parser<R> {
        pub reader: R,
        buf: Vec<u8>,
        pos: usize,
    }

    impl Parser<io::Empty> {
        pub fn from_str(s: &str) -> Parser<io::Empty> {
            Parser {
                reader: io::empty(),
                buf: s.as_bytes().to_vec(),
                pos: 0,
            }
        }
    }

    impl<R: BufRead> Parser<R> {
        pub fn new(reader: R) -> Parser<R> {
            Parser {
                reader: reader,
                buf: vec![],
                pos: 0,
            }
        }
        pub fn update_buf(&mut self) {
            self.buf.clear();
            self.pos = 0;
            loop {
                let (len, complete) = {
                    let buf2 = self.reader.fill_buf().unwrap();
                    self.buf.extend_from_slice(buf2);
                    let len = buf2.len();
                    (len, buf2[len - 1] <= 0x20)
                };
                self.reader.consume(len);
                if complete {
                    break;
                }
            }
        }
        pub fn next<T: str::FromStr>(&mut self) -> Result<T, T::Err> {
            loop {
                let mut begin = self.pos;
                while begin < self.buf.len() && (self.buf[begin] <= 0x20) {
                    begin += 1;
                }
                let mut end = begin;
                while end < self.buf.len() && (self.buf[end] > 0x20) {
                    end += 1;
                }
                if begin != self.buf.len() {
                    self.pos = end;
                    return unsafe { str::from_utf8_unchecked(&self.buf[begin..end]) }.parse::<T>();
                } else {
                    self.update_buf();
                }
            }
        }
        pub fn next_line(&mut self) -> String {
            loop {
                let mut begin = self.pos;
                if begin < self.buf.len() && (self.buf[begin] < 0x20) {
                    begin += 1;
                }
                let mut end = begin;
                while end < self.buf.len() && (self.buf[end] >= 0x20) {
                    end += 1;
                }
                if begin != self.buf.len() {
                    self.pos = end;
                    return unsafe { str::from_utf8_unchecked(&self.buf[begin..end]) }.to_string();
                } else {
                    self.update_buf();
                }
            }
        }
        pub fn fast_i64(&mut self) -> i64 {
            loop {
                let mut begin = self.pos;
                while begin < self.buf.len() && (self.buf[begin] <= 0x20) {
                    begin += 1;
                }
                if begin == self.buf.len() {
                    self.update_buf();
                    continue;
                }
                let mut res = 0;
                let (is_positive, mut end) = match self.buf[begin] {
                    b'+' => (true, begin + 1),
                    b'-' => (false, begin + 1),
                    _ => (true, begin),
                };
                while end < self.buf.len() && (self.buf[end] > 0x20) {
                    res = res * 10 + (self.buf[end] as i64 - '0' as i64);
                    end += 1;
                }
                if begin != self.buf.len() {
                    self.pos = end;
                    return if is_positive { res } else { -res };
                } else {
                    self.update_buf();
                }
            }
        }
    }
}

mod cumulative {
    use std::ops::*;

    pub fn cu<T: Add<Output = T> + Copy>(zero: T, xs: &Vec<T>) -> Vec<T> {
        let mut res = vec![zero; xs.len() + 1];
        for (i, &x) in xs.iter().enumerate() {
            res[i + 1] = res[i] + x;
        }
        res
    }
}

use input_mcr::*;
use std::cmp::*;

use cumulative::*;

fn main() {
    input! {
        n: usize,
        m: usize,
        nx: usize,
        ny: usize,
        nz: usize,
        xs: [i64; nx],
        ys: [i64; ny],
        zs: [i64; nz],
    }
    let mut xs = xs;
    xs.sort();
    let mut ys = ys;
    ys.sort();
    ys.reverse();
    let mut zs = zs;
    zs.sort();
    zs.reverse();
    let mut xys = xs.clone();
    for &y in &ys {
        xys.push(y);
    }
    // eprintln!("xys = {:?}", xys);
    let xys_cu = cu(0, &xys);
    let zs_cu = cu(0, &zs);
    let mut res = 0;
    for i in 0..min(n + m + 1, zs_cu.len()) {
        let xy_required = n + m - i;
        // eprintln!("i = {}, required = {}", i, xy_required);
        let mut left = if xs.len() >= n { xs.len() - n } else { 0 };
        let mut right = if xs.len() + m >= xy_required {
            xs.len() + m - xy_required
        } else {
            0
        };
        let eval = |k: usize| {
            if k + xy_required < xys_cu.len() {
                xys_cu[k + xy_required] - xys_cu[k] + zs_cu[i]
            } else {
                0
            }
        };
        while right - left >= 10 {
            let p1 = (right + left * 2) / 3;
            let p2 = (right * 2 + left) / 3;
            let v1 = eval(p1);
            let v2 = eval(p2);
            if v1 < v2 {
                left = p1;
            } else {
                right = p2;
            }
        }
        for k in left..right + 1 {
            let t = eval(k);
            // eprintln!("i = {}, k = {}, t = {}", i, k, t);
            res = max(res, t);
        }
    }
    println!("{}", res);

    return;
    let mut ys = ys;
    ys.sort();
    ys.reverse();
    let mut zs = zs;
    zs.sort();
    zs.reverse();
    let xs_cu = cu(0, &xs);
    let ys_cu = cu(0, &ys);
    let zs_cu = cu(0, &zs);
    let mut res = 0;
    for i in 0..min(n + 1, xs_cu.len()) {
        for k in 0..min(m + 1, ys_cu.len()) {
            // eprintln!("i = {}, k = {}", i, k);
            if n + m >= i + k && n + m - i - k < zs_cu.len() {
                let t = xs_cu[i] + ys_cu[k] + zs_cu[n + m - i - k];
                // eprintln!("i = {}, k = {}, t = {}", i, k, t);
                res = max(res, t);
            }
        }
    }
    println!("{}", res);
}



Measured memory_bytes: 16052