MostFrequentNumber

using System;
using System.Linq;

namespace MostFrequentNumber
{
    class MostFrequentNumber
    {
        public static void Main(string[] args)
        {
            int[] numbers = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
            int counter = 0;
            int number = 0;
            int maxCounter = 0;

            for (int i = 0; i < numbers.Length; i++)
            {
                for (int j = i+1; j < numbers.Length; j++)
                {
                    if (numbers[i] == numbers[j])
                    {
                        counter++;

                        if (counter > maxCounter )
                        {
                            number = numbers[i];
                            maxCounter = counter;
                        }
                        else
                        {
                            counter = 0;

                        }

                    }
                }
            }
            Console.WriteLine(number);

        }
    }
}