map1

#include <iostream>
#include <cmath>
#include <vector>
#include <algorithm>
#include <string>
#include <fstream>
#include <sstream>
#include <set>
#include <map>

using namespace std;
ifstream in("input.txt");
ofstream out("output.txt");

int main() {
    map<int, int> mc;
    map <string, int> ms;
    string s;
    int ps = 0;
    while (in >> s) {
        bool f = 1;
        for (auto x : s) {
            if (!isdigit(x)) {
                f = 0;
                break;
            }
        }
        if (f) {
            mc[stoi(s)]++;
            ps = stoi(s);
        }
        else {
            ms[s]++;
        }
    }

    for (auto x : ms) {
        if (x.second == mc[ps]) {
            out << x.first << endl;
        }
    }
}

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