#include <bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin >> n;
  map <string, int> mp;
  for (int i = 0; i < n; i++){
    string s;
    cin >> s;
    mp[s]++;
  }
  int mx = -1;
  for (auto now : mp){
    mx = max(mx, now.second);
  }
  for (auto now : mp){
    if (now.second == mx) cout << now.first << '\n';
  }
  return 0;
}