[StartCode]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp20
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int[] numbers1 = { 5, 2, 2 };
            int[] numbers2 = { 5, 1, 1 };
            List<int> numbersList = new List<int>();
            AddNumbers(numbers1, numbersList);
            AddNumbers(numbers2, numbersList);

            foreach(var i in numbersList)
            {
                if (numbersList[i] = numbersList.Contains)
                {
                    numbersList.RemoveAt(i);
                }
                else
                {
                    break;
                }
            }
            ShowNumbers(numbersList);
        }

        static void AddNumbers(int[] numbers, List<int> numbersList)
        {
            for (int i = 0; i < numbers.Length; i++)
            {
                numbersList.Add(numbers[i]);
            }
        }

        static void ShowNumbers(List<int> numbersList)
        {
            for (int i = 0; i < numbersList.Count; i++)
            {
                Console.WriteLine(numbersList[i]);
            }
        }

        static void DeleteDuplicateNumber()
        {

        }
    }
}
[EndCode]