s = 200

str = ''
i = 1
loop do
  str << if i % 15 == 0
           'FizzBuzz'
         elsif i % 5 == 0
           'Buzz'
         elsif i % 3 == 0
           'Fizz'
         else
           i.to_s
         end

  break if str.length >= s + 20
  i += 1
end

puts str[(s-1)..(s+19)]