#!/usr/bin/env python

import sys
import yaml
import six

def cv_amp(s, d='enc'):
	lst = [ ('&','&amp;'), ('<','&lt;'), ('>','&gt;') ]
	if d != 'enc':
		lst = reversed(lst)
	for (f, t) in lst:
		if d != 'enc':
			(f, t) = (t, f)
		s = s.replace(f, t)
	return s

def html_dump(o):
	if not o:
		return ''
	if type(o) == list:
		return '\n'.join( map(html_dump, o) )
	if type(o) == dict:
		(tag, v) = list( o.items() )[0]
		s = '<' + tag + '>'
		if v != '/':
			s += html_dump(v) + '</' + tag.split(' ')[0] + '>'
		return s
	return cv_amp(o)

if __name__ == "__main__":
	fi = sys.stdin if six.PY2 else sys.stdin.buffer
	s = fi.read()
	s = unicode(s, 'utf-8') if six.PY2 else s.decode()

	o = yaml.load(s)

	s = html_dump(o) + '\n'
	s = s.encode('utf-8') if six.PY2 else s.encode()

	fo = sys.stdout if six.PY2 else sys.stdout.buffer
	fo.write(s)
# EOF