#include <iostream>
#include <vector>
#include <list>
#include <algorithm>
#include <string>
#include <sstream>
#include <stack>
#include <iomanip>
#include <numeric>
#include <queue>
#include <climits>
#include <set>
#include <complex>
#include <cmath>
#include <cstring>
#include <map>
using namespace std;
using ll = long long;
#define MOD 1000000007
#define INF 1LL << 59
using ld = long double;

bool operator<(const pair<int, int> &a, const pair<int, int> &b)
{
    if (a.first == b.first)
    {
        return b.second > a.second;
    }
    return a.first < b.first;
}

int a[1010];
int main()
{
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
    //cout << fixed << setprecision(6);

    int n;
    cin >> n;

    for (int i = 0; i < n; ++i)
    {
        string s;
        cin >> s;
        a[(int)s.size() - 2]++;
    }

    int maxV = 0;
    int ans = 0;
    for (int i = 0; i < 1010; ++i)
    {
        if (maxV <= a[i])
        {
            maxV = a[i];
            ans = i;
        }
    }
    cout << ans << endl;

    return 0;
}