def hoge(s)
    if s % 3 == 0 && s % 5 == 0
        return "FizzBuzz"
    elsif s % 3 == 0
        return "Fizz"
    elsif s % 5 == 0
        return "Buzz"
    else
        return s.to_s
    end
end

p gets.chomp.split.map(&:to_i).map{|s|hoge(s).size}.inject(:+)