#include <iostream>
#include <map>
#include <string>
#include <algorithm>
using namespace std;
 
int main() {
    using mmap = map<string, int>; mmap freq;
 
    int n;
    string word;
 
    do {
        freq.clear();
 
        cin >> n;
        if (n < 1 || n > 100000) return 0;
 
        for (int i = 0; i < n; i++)
        {
            cin >> word;
            freq[word]++;
        }
 
        auto iter = max_element(begin(freq), end(freq), []
(const mmap::value_type& a, const mmap::value_type& b){ return a.second < b.second; });
 
        if ((iter == end(freq)) || any_of(next(iter), end(freq), [&](const mmap::value_type& a){ return a.second == iter->second; }))
            cout << "none" << endl;
        else
            cout << iter->first << endl;
 
        //system("pause");
    }
    while (true);
 
    return 0;
}

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5 apple apple banana apple banana
4 apple banana apple banana
2 apple banana
0