题解 | #明明的随机数# Java快读快写 TreeSet

import java.io.*;
import java.util.*;
public class Main {
    public static void main(String[] args) throws IOException{
        StreamTokenizer in = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
        in.nextToken();
        int n = (int) in.nval;
        TreeSet<Integer> intSet = new TreeSet<>(new Comparator<Integer>() {
            @Override public int compare(Integer o1, Integer o2) { return o1 - o2; }
        });
        for (int i = 0; i < n; i++) {
            in.nextToken();
            intSet.add((int) in.nval);
        }
        PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
        for (int i : intSet) out.println(i);
        out.flush();
    }
}