/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc = new Scanner(System.in);
		TreeSet<Integer> tree = new TreeSet<>();
		int n = sc.nextInt();
		for(int i=0;i<n;i++){
			int num = sc.nextInt();
			tree.add(num);
		} 
 
		for(Integer k : tree){
			System.out.println(k);
		}
	}
}

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MTAKMiA0IDUgNiAxIDMgOSA4IDExIDEwCg==

10
2 4 5 6 1 3 9 8 11 10