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

public class Main {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String[] list = new String[10];
        for (int i = 0; i < 10; i++) {
            list[i] = input.nextLine();
        }
        Arrays.sort(list);
        for (int i = 0; i < 10; i++) {
            System.out.println(list[i]);
        }
    }
}