题解 | #明明的随机数#

import java.util.Iterator;
import java.util.Scanner;
import java.lang.Integer;
import java.util.TreeSet;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
     
        int total=Integer.parseInt(in.nextLine());
        TreeSet<Integer> tSet= new TreeSet<Integer>();
        for(int i=1;i<=total;i++){
            int cur=Integer.parseInt(in.nextLine());
            tSet.add(cur);
        }

        Iterator<Integer> it=tSet.iterator();
        while(it.hasNext()){
            System.out.println(it.next());
        }
       }
}