#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, m;
    cin >> n >> m;

    map<string, int> languages;
    map<string, int> appearance;

    for (int i = 0; i < n+m; i++) {
        int cnt;
        string lang;
        cin >> cnt;
        getline(cin, lang);
        lang = lang.substr(1);
        languages[lang] = cnt;
        appearance[lang] += 1;
    }

    int max = 0, min = 100000;
    string maxname = "NINCS", minname = "NINCS";

    for (auto p : languages) {
        if (appearance[p.first] == 2 && p.second > max) {
            max = p.second;
            maxname = p.first;
        }
        if (appearance[p.first] == 2 && p.second < min) {
            min = p.second;
            minname = p.first;
        }
    }

    cout<<minname<<endl<<maxname;
}