#define _GLIBCXX_DEBUG
#define ll long long
#include <bits/stdc++.h>
using namespace std;
using Graph = vector<vector<int>>;

void print(auto a){
  cout << a;
}

void prints(auto a){
  cout << a << " ";
}

void printL(auto a){
  cout << a << endl;
}

void printL(){
  cout << endl;
}

void fix(int n){
  cout << fixed << setprecision(n);
}

int siz(string s){
  return (int)s.size();
}

int main() {
  int N, M; cin >> N >> M;
  map<string, int> mp;
  for(int i = 0; i < N+M; i++){
    string S; cin >> S;
    int A; cin >> A;
    mp[S] = A;
  }
  for(auto p: mp){
    prints(p.first);
    printL(p.second);
  }
}