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 scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int []arr = new int[501];
        while (N >= 1) {
            int a = scanner.nextInt();
            arr[a] = 1;
            N--;

        }

        for (int i = 0; i < arr.length; i++) {
            if (arr[i] == 1) {
                System.out.println(i);
            }
        }


    }

}