Bitwise Operations

using System;

namespace _04._Concatenate_Data
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int number = int.Parse(Console.ReadLine());
            int zeroOrOne = int.Parse(Console.ReadLine()); //0 или 1

            int counter = 0; //броят на 0 или 1

            while (number > 0)
            {
                int leftover = number % 2;
                if (leftover == zeroOrOne)
                {
                    counter++;
                }
                number /= 2;
            }

            Console.WriteLine(counter);

        }
    }
}