using System;
using System.Collections.Generic;
using System.Text;

namespace SoftUni_Party
{
    class SoftUniParty
    {
        static void Main(string[] args)
        {
            HashSet<string> listVIP = new HashSet<string>();
            HashSet<string> listRgular = new HashSet<string>();

            bool isExitLoop = false;

            while (!isExitLoop)
            {
                string input = Console.ReadLine();

                if (input.ToUpper().Equals("PARTY"))
                {
                    isExitLoop = true;
                }
                else
                {
                    if (char.IsDigit(input[0]))
                    {
                        listVIP.Add(input);
                    }
                    else
                    {
                        listRgular.Add(input);
                    }

                }
            }

            isExitLoop = false;

            while (!isExitLoop)
            {
                string input = Console.ReadLine();

                if (input.ToUpper().Equals("END"))
                {
                    isExitLoop = true;
                }
                else
                {
                    listVIP.Remove(input);
                    listRgular.Remove(input);
                }
            }

            StringBuilder sb = new StringBuilder();

            sb.AppendLine($"{listVIP.Count + listRgular.Count}");

            foreach (string item in listVIP)
            {
                sb.AppendLine(item);
            }

            foreach (string item in listRgular)
            {
                sb.AppendLine(item);
            }

            Console.WriteLine(sb.ToString());
        }
    }
}