#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <array>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
using namespace std;

const int MAX = 1000;

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

    vector<pair<int, int> > v(MAX+1);
    for(int i=0; i<=MAX; ++i)
        v[i] = make_pair(0, i);

    for(int i=0; i<n; ++i){
        string s;
        cin >> s;
        ++ v[s.size()-2].first;
    }
    cout << max_element(v.begin(), v.end())->second << endl;

    return 0;
}