struct Frac {
    n: i64,
    d: i64,
}

impl Frac {
    fn cmp(&self, other: &Self) -> std::cmp::Ordering {
        (other.d * self.n).cmp(&(self.d * other.n))
    }
}

fn main() {
    let mut xx = String::new();
    std::io::Read::read_to_string(&mut std::io::stdin(), &mut xx).ok();
    let xx: Vec<i64> = xx.split_whitespace().skip(1).flat_map(str::parse).collect();

    let mut fractions: Vec<Frac> = xx.chunks(2).map(|x| Frac { n: x[0], d: x[1] }).collect();

    fractions.sort_unstable_by(Frac::cmp);
    fractions.reverse();

    for f in fractions {
        println!("{} {}", f.n, f.d);
    }
}