class Array
  def dividable_by_3
    (sum % 3).zero?
  end

  def dividable_by_5
    (alternating_sum % 5).zero?
  end

  def alternating_sum
    x = 0
    is_positive = true

    each do |i|
      if is_positive
        x += i
        is_positive = false
      else
        x -= i
        is_positive = true
      end
    end

    x
  end
end

def solve
  tmp = (N.dividable_by_3 ? 'Fizz' : '') + (N.dividable_by_5 ? 'Buzz' : '')
  tmp == '' ? N.join : tmp
end

N = gets.chomp.chars.map(&:to_i)

puts solve