题解 | #明明的随机数#

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int num = scan.nextInt();

        int[] data = new int[1000];
        int str = scan.nextInt();
        while(str > 0){
            data[str] = str;
            try{
                str = scan.nextInt();
            }catch(Exception e){
                break;
            }
        }

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