Spyfer Exam

using System;
using System.Globalization;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Linq;

namespace lab3.Spyfer
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> input = Console.ReadLine().Split(' ').Select(int.Parse).ToList();

            if (input.Count < 2)
            {
                Console.WriteLine(string.Join(" ", input));
                return;
            }
            else
            {
                int counter = 0;
                while (counter != input.Count)
                {
                    if (input.Count == 1)
                    {
                        Console.WriteLine(string.Join(" ", input));
                        return;
                    }

                    for (int i = 0; i < input.Count; i++)
                    {
                        if (i == 0)
                        {
                            if (input[i] == input[i + 1])
                            {
                                input.RemoveAt(i + 1);
                                counter = 0;
                                break;
                            }
                        }
                        else if (i == input.Count - 1)
                        {
                            if (input[i] == input[i - 1])
                            {
                                input.RemoveAt(i - 1);
                                counter = 0;
                                break;
                            }
                        }
                        else if (input[i - 1] + input[i + 1] == input[i])
                        {
                            input = RemoveNeghbours(input, i - 1, i + 1).ToList();
                            counter = 0;
                            break;

                        }
                        counter++;
                    }

                }
                Console.WriteLine(string.Join(" ", input));
            }


        }

        private static List<int> RemoveNeghbours(List<int> input, int v1, int v2)
        {
            List<int> temp = new List<int>();
            for (int i = 0; i < input.Count; i++)
            {
                if (i == v1 || i == v2)
                {
                    continue;
                }
                else
                {
                    temp.Add(input[i]);
                }
            }
            return temp;
        }
    }
}