题解 | #明明的随机数#

import java.util.Scanner;
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;

// 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 scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            int number = scanner.nextInt();
            Set<Integer> set = new TreeSet<>();
            for (int i = 0; i < number; i++) {
                set.add(scanner.nextInt());
            }
            for (Integer i : set) {
                System.out.println(i);
            }
        }


    }
}