import java.util.*;

class Main{
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		
		int input_num = sc.nextInt();
		HashMap<String, Integer> map = new HashMap<String, Integer>();
		
		//単語の入力とカウント
		for(int i=0;i<input_num;i++){
			String str = sc.next();
			if(map.get(str) == null){
				map.put(str, 1);
			}else{
				map.put(str, map.get(str) + 1);
			}
		}
		
		int max = 0;
		for (int val : map.values()) {
			if(val > max) max = val;
		}
		
		List<String> list = new ArrayList<String>();
		
		for (String key : map.keySet()) {
			if(map.get(key) == max) list.add(key);
		}
		
		Collections.sort(list);
		for(int i=0;i<list.size();i++){
			System.out.println(list.get(i));
		}
		
		
	}
}
		
		

/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