Binary Digits Count

using System;

class Program {
  public static void BinaryDigitsCount (string[] args) {

    int number = int.Parse(Console.ReadLine());
    int binaryNumber = int.Parse(Console.ReadLine());

    int count = 0;
    while(number != 0)
    {
      int leftover = number % 2;
      if(leftover == binaryNumber)
      {
        count++;
      }
      number = number / 2;
    }
    Console.WriteLine (count);
  }
}