#!/usr/bin/ruby
i=1
 while i<=20 
  if (i % 3 == 0) and (i % 5 == 0) then print("FizzBuzz\n") 
   elsif (i % 3 == 0) then print("Fizz\n")
   elsif (i % 5 == 0) then print("Buzz\n")
   else p i end
  i=i+1
 end