import cgi
import fileinput

for line in fileinput.input(inplace=False):
    if fileinput.isfirstline():
       klass = 'aaa' # start head part
    line = cgi.escape(line.decode('utf-8').strip())
    line = line.encode('ascii', 'xmlcharrefreplace')
    if not line: # empty line
       klass = 'bbb' # start tail part
       print(line)
    else:
       print('<p class="%s">%s</p>' % (klass, line))