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package com.todd.nowcoder;

import java.util.ArrayList;

import java.util.LinkedList;

import java.util.List;

import java.util.Scanner;

/**

* @author tongchengdong

* @description 明明的随机数

* @date 5:30 PM 2022/7/2

*/

public class HJ3 {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

while (sc.hasNext()) {

int n = sc.nextInt();

int[] nums = new int[n];

for (int i = 0; i < n; i++) {

nums[i] = sc.nextInt();

}

List<Integer> ans = solve(nums);

for (Integer num : ans) {

System.out.println(num);

}

}

}

public static List<Integer> solve(int[] nums) {

boolean[] vis = new boolean[500];

for (int i = 0; i < nums.length; i++) {

vis[nums[i]] = true;

}

List<Integer> ans = new LinkedList<>();

for (int i = 0; i < vis.length; i++) {

if (vis[i] == true) {

ans.add(i);

}

}

return ans;

}

}