LongestAreaInArr

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


class LongestAreaInArray
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        int counter = 0;
        int checkLength = 0;
        string[] words = new string[n];
        List<int> length = new List<int>();

        for (int i = 0; i < words.Length; i++)
        {
            words[i] = Console.ReadLine();
        }

        string check = words[0];

        for (int i = 0; i < words.Length; i++)
        {
            if (check == words[i])
            {
                check = words[i];
                counter++;
                if (i == words.Length - 1)
                {
                    length.Add(counter);

                }
            }
            else if (check != words[i])
            {
                check = words[i];
                length.Add(counter);
                counter = 1;
            }
        }

        checkLength = length.Max();

        if (checkLength == 1)
        {
            Console.WriteLine("\n"+checkLength +"\n"+words[0]);
        }

        else if (length.Count == 1)
        {
            Console.WriteLine("\n" + length[0]);
            foreach (string item in words)
            {
                Console.WriteLine(item);
            }
        }

        else
        {
            for (int i = 0; i < words.Length; i++)
            {

                if (check == words[i])
                {
                    check = words[i];
                    counter++;
                    if (checkLength == counter)
                    {
                        Console.WriteLine("\n" + checkLength);
                        for (int x = 0; x < checkLength; x++)
                        {
                            Console.WriteLine(check);
                        }
                        break;
                    }

                }

                else if (check != words[i])
                {
                    check = words[i];
                    length.Add(counter);
                    counter = 1;
                }
            }
        }
    }
}