#!/usr/bin/env ruby

if !ARGV[0]
  puts "usage: #{$0} 0x12345"
  exit 1
end

num = ARGV[0].to_s.to_i(ARGV[0].match(/^0x/) ? 16 : 10)
b = sprintf("%b", num)
pad = ((b.length / 8.0).ceil * 8) - b.length
puts "#{"0" * pad}#{b}"