class FizzBuzz
  include Enumerable
  def each
    i = 0
    loop do
      i=i.succ; yield i
      i=i.succ; yield i
      i=i.succ; yield "Fizz"
      i=i.succ; yield i
      i=i.succ; yield "Buzz"
      i=i.succ; yield "Fizz"
      i=i.succ; yield i
      i=i.succ; yield i
      i=i.succ; yield "Fizz"
      i=i.succ; yield "Buzz"
      i=i.succ; yield i
      i=i.succ; yield "Fizz"
      i=i.succ; yield i
      i=i.succ; yield i
      i=i.succ; yield "FizzBuzz"
    end
  end
end

puts FizzBuzz.new.take(gets.to_i)