#define _GLIBCXX_DEBUG //遅い可能性がある 
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ALL(a) (a).begin(),(a).end() //lower_bound(ALL(a),x)
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<vector<int>>;
template <typename T>
bool chmax(T &a, const T& b) {
  if (a < b) {
    a = b;  // aをbで更新
    return true;
  }
  return false;
}
template <typename T>
bool chmin(T &a, const T& b) {
  if (a > b) {
    a = b;  // aをbで更新
    return true;
  }
  return false;
}
int INF = 100100100;

int main() {
    int n,m;
    cin >> n >> m;
    map<string, int> rating;
    rep(i,n) {
        string name;
        int r;
        cin >> name >> r;
        rating[name] = r;
    }
    rep(i,m) {
        string name;
        int nr;
        cin >> name >> nr;
        rating[name] = nr;
    }
    vector<string> ret;
    for (auto i = rating.begin(); i != rating.end(); i++) {
        ret.push_back(i -> first);
    }
    sort(ALL(ret));
    for (auto ans: ret) {
        cout << ans << " " << rating[ans] << endl;
    }
}