using System;
using System.Collections.Generic;
public class Program
{
public static void Main(string[] args)
{
List<int> list = new List<int>() { 1, 3, 2, 9, 0, 7, 50 };
HashSet<int> set = new HashSet<int>(list);
Console.WriteLine(string.Join(" ", set));
}
}
/*
run:
1 3 2 9 0 7 50
*/