import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int m = sc.nextInt();
        TreeMap<String, Integer> points = new TreeMap<>();
        for (int i = 0; i < n; i++) {
            points.put(sc.next(), sc.nextInt());
        }
        for (int i = 0; i < m; i++) {
            points.put(sc.next(), sc.nextInt());
        }
        StringBuilder sb = new StringBuilder();
        for (Map.Entry<String, Integer> entry : points.entrySet()) {
            sb.append(entry.getKey()).append(" ").append(entry.getValue()).append("\n");
        }
        System.out.print(sb);
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}