import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.Map;
import java.util.TreeMap;

public class Main {
    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        int n = Integer.parseInt(br.readLine());
        String s;
        Map<String, Integer> map = new TreeMap<>();
        int max = 0;
        for (int i = 0; i < n; i++) {
            s = br.readLine();
            int val = map.containsKey(s) ? map.get(s) + 1 : 1;
            map.put(s, val);
            max = Math.max(max, val);
        }

        br.close();

        for (String key : map.keySet()) {
            if (map.get(key) == max) {
                bw.write(key + "\n");
            }
        }

        bw.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