DistinctList

using System;
using System.Collections.Generic;
using System.Linq;

namespace DistinctList
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            List<long> intList = input.Split(' ').Select(long.Parse).ToList();
            List<int> removeList = new List<int>();
            for (int i = 0; i < intList.Count; i++)
            {
                for (int j = i; j < intList.Count; j++)
                {
                    if (intList[i] == intList[j] && i != j)
                    {
                        removeList.Add(j);
                    }
                }
            }
            removeList.Sort();
            for (int i = removeList.Count - 1; i >= 0; i--)
            {
                intList.RemoveAt(removeList[i]);
            }
            for (int i = 0; i < intList.Count; i++)
            {
                Console.Write(intList[i] + " ");
            }
            Console.WriteLine();
        }
    }
}