gistfile1.txt

def sum_to_pw(int)
  out = "%u" % ((int * 31695317) & 0xffffffff)
  out.bytes.each_with_index do |b, i|
    out[i] += '!'[0] if out[i] < '3'[0]
    out[i] += '/'[0] if out[i] < '7'[0]
    out[i] += 'B'[0] if out[i] < '9'[0]
  end
  out
end