题解 | #明明的随机数#

import java.util.Scanner;

// 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);
        int n= in.nextInt();
        boolean[] flagArray = new boolean[501] ;
        for(int i = 0 ; i < n ;i++){
            int a = in.nextInt();
            flagArray[a] = true ;
        }
        for(int i = 0 ; i < 501 ;i++){
            if(flagArray[i]){
                System.out.println(i);
            }
        }
    }
}