import java.io.*;
import java.util.*;

public class Main {
	static PrintWriter out = new PrintWriter(System.out);
	public static void main(String[] args) throws Exception {
		try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {
			int n = Integer.parseInt(br.readLine());
			Map<String, Integer> map = new HashMap<>();
			int max = 0;
			for (int i = 0; i < n; i++) {
				String s = br.readLine();
				int val = map.containsKey(s) ? map.get(s) + 1 : 1;
				map.put(s, val);
				max = Math.max(max, val);
			}
			List<String> list = new ArrayList<>();
			for (String key : map.keySet()) if (map.get(key) == max) list.add(key);
			Collections.sort(list);
			for (String s : list) out.println(s);
			out.flush();
		}
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz