#![allow(non_snake_case, unused_imports, unused_must_use)]
use std::io::{self, prelude::*};
use std::str;

fn main() {
    let (stdin, stdout) = (io::stdin(), io::stdout());
    let mut scan = Scanner::new(stdin.lock());
    let mut out = io::BufWriter::new(stdout.lock());

    macro_rules! input {
        ($T: ty) => {
            scan.token::<$T>()
        };
        ($T: ty, $N: expr) => {
            (0..$N).map(|_| scan.token::<$T>()).collect::<Vec<_>>()
        };
    }

    let N = input!(usize);
    let X = input!(usize, N);
    let Y = input!(usize, N);

    let Z = {
        let mut z = vec![];
        z.append(&mut X.clone());
        z.append(&mut Y.clone());
        z.sort();
        z
    };

    let t = Z[N - 1];

    let mut x_l = 0;
    let mut y_l = 0;

    for &x in X.iter() {
        if x <= t {
            x_l += 1;
        }
    }

    for &y in Y.iter() {
        if y <= t {
            y_l += 1;
        }
    }

    let mut P = vec![1];

    for i in 1..100_010 {
        P.push((P[i - 1] * i) % 998_244_353);
    }

    writeln!(out, "{}", (P[x_l] * P[y_l]) % 998_244_353);
}

struct Scanner<R> {
    reader: R,
    buf_str: Vec<u8>,
    buf_iter: str::SplitWhitespace<'static>,
}
impl<R: BufRead> Scanner<R> {
    fn new(reader: R) -> Self {
        Self {
            reader,
            buf_str: vec![],
            buf_iter: "".split_whitespace(),
        }
    }
    fn token<T: str::FromStr>(&mut self) -> T {
        loop {
            if let Some(token) = self.buf_iter.next() {
                return token.parse().ok().expect("Failed parse");
            }
            self.buf_str.clear();
            self.reader
                .read_until(b'\n', &mut self.buf_str)
                .expect("Failed read");
            self.buf_iter = unsafe {
                let slice = str::from_utf8_unchecked(&self.buf_str);
                std::mem::transmute(slice.split_whitespace())
            }
        }
    }
}