using System;
using System.Collections.Generic;
 
namespace Application
{
    class Application
    {
        static void Main(string[] args)
        {
            List<int> l1 = new List<int>();
            l1.Add(1);
            l1.Add(1);
            l1.Add(1);
            List<int> l2 = new List<int>();
            l2.Add(3);
            l2.Add(3);
            List<int> output = new List<int>();
            output.AddRange(l1);
            output.AddRange(l2);
            Console.WriteLine(output.Count);
            foreach(int tmp in output)
            {
                Console.WriteLine(tmp);
            }
        }
    }
}