use std::io::{Read,stdin};

fn main() {
    let mut buf = String::new();
    stdin().read_to_string(&mut buf).unwrap();
    let mut tok = buf.split_whitespace();
    let mut get = || tok.next().unwrap();
    macro_rules! get {
        ($t:ty) => (get().parse::<$t>().unwrap());
        () => (get!(i64));
    }
    
    let n = get!();
    let mut x1 = 1;
    let mut x2 = 1;
    for i in 0..n {
        let x = get!();
        if i == 0 {
            x1 *= x;
        } else {
            x2 *= x;
        }
    }
    let m = get!();
    let mut y1 = 1;
    let mut y2 = 1;
    for i in 0..m {
        let y = get!();
        if i > 0 {
            y1 *= y;
        } else {
            y2 *= y;
        }
    }
    
    let g = gcd(x1 * y1, x2 * y2);
    let z1 = x1 * y1 / g;
    let z2 = x2 * y2 / g;
    let s = (z1 * z2).signum();
    let z1 = z1.abs() * s;
    let z2 = z2.abs();
    println!("{} {}", z1, z2);
}

fn gcd(a: i64, b: i64) -> i64 {
    fn _gcd(a: i64, b: i64) -> i64 {
        if a == 0 {
            b
        } else {
            _gcd(b % a, a)
        }
    }
    let a = a.abs();
    let b = b.abs();
    if a < b { _gcd(a, b) } else { _gcd(b, a)  }
}