import java.util.Arrays;
import java.util.Scanner;

public class BookShelf2 {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		sc.nextLine();
		
		String[] a = new String[n];
		for (int i = 0; i < n; i++) {
			a[i] = sc.nextLine();
		}
		
		Arrays.sort(a);
		for (String s : a) {
			System.out.println(s);
		}
		
		sc.close();
	}
}