Funct.cs

namespace JoinLists
{
    using System;
    using System.Collections.Generic;
    using System.Linq;

    class JoinLists
    {
        static void Main(string[] args)
        {
            List<int> list =Console.ReadLine().Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToList();
            list.AddRange(Console.ReadLine().Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse));
            list.Sort();
            Console.WriteLine(string.Join(" ", list.Distinct()));
        }
    }
}