JaeHyeonKim19

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

public class Main {
	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		int n = Integer.parseInt(br.readLine());
		String[] strs = new String[n];
		for(int i = 0; i < n; i++) {
			strs[i] = br.readLine();
		}
		Arrays.sort(strs, new Comparator<String>() {
			@Override
			public int compare(String str1, String str2) {
				if(str1.length() > str2.length()) {
					return 1;
				}else if(str1.length() == str2.length()) {
					return str1.compareTo(str2);
				}else {
					return -1;
				}
			}
		});
		bw.write(strs[0] + "\n");
		for(int i = 1; i < n; i++) {
			if(!strs[i].equals(strs[i - 1])) bw.write(strs[i] + "\n");
		}
		bw.flush();
	}
}