using System;
using System.Linq;
namespace Last3ConsecutiveEqualStrings
{
    class Last3ConsecutiveEqualStrings
    {
        static void Main()
        {

            string[] inputArr = Console.ReadLine()
                .Split(' ');
            int count = 1;
            string word = string.Empty;

            for (int i = inputArr.Length - 1; i > 0; i--)
            {
                word = inputArr[i];
                if (inputArr[i] == inputArr[i - 1])
                {
                    count++;
                    if (count == 3)
                    {

                        for (int j = 0; j < count; j++)
                        {

                            Console.Write($"{word} ");
                        }
                        break;
                    }
                }
                else
                {
                    count = 1;

                }
            }
        }


    }
}