import java.util.*;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
// 注意 hasNext 和 hasNextLine 的区别
while (in.hasNextLine()) {
int times = Integer.parseInt(in.nextLine());
String[] lines = new String[times];
for (int i = 0; i < times; ++i) {
lines[i] = in.nextLine();
}
Arrays.sort(lines);
for (String line : lines) {
System.out.println(line);
}
}
}
}