use std::collections::HashMap;

fn main() {
    let mut buf = String::new();
    let mut input = {
        use std::io::Read;
        std::io::stdin().read_to_string(&mut buf).unwrap();
        buf.split_whitespace()
    };

    let n: usize = input.next().unwrap().parse().unwrap();
    let m: usize = input.next().unwrap().parse().unwrap();

    let mut s = vec![];
    let mut a = vec![];
    for _ in 0..n {
        let s_i: String = input.next().unwrap().parse().unwrap();
        let a_i: usize = input.next().unwrap().parse().unwrap();
        s.push(s_i);
        a.push(a_i);
    }

    let mut t = vec![];
    let mut b = vec![];
    for _ in 0..m {
        let t_j: String = input.next().unwrap().parse().unwrap();
        let b_j: usize = input.next().unwrap().parse().unwrap();
        t.push(t_j);
        b.push(b_j);
    }

    let mut rate_map = HashMap::new();
    for i in 0..n {
        rate_map.insert(s[i].clone(), a[i]);
    }
    for j in 0..m {
        rate_map.insert(t[j].clone(), b[j]);
    }

    let mut rate_vec = rate_map.into_iter().collect::<Vec<_>>();
    rate_vec.sort_by(|(key1, _), (key2, _)| key1.cmp(&key2));

    for (name, rate) in &rate_vec {
        println!("{} {}", name, rate);
    }
}