convert

I just started working for a software company and my first task is to write a program that converts HTML documents into plain text. Besides the text that I'm interested in, HTML documents also contain formatting tags. Any formatting tag in my documents begins with a start label in form <...> (where by ... I represented the name of the tag and its possible attributes) and it ends in an end-label in form </...> (where ... is the name of the tag). What is between the start and end label can be simple text or text formatted using other formatting tags. Plain text not contained between formatting tags can also show up in my documents. Document tag formatting is correct (a tag will not be closed if there is a tag inside it that has not been closed), and no other label can appear inside a label.

Task

Seeing as I couldn't do it, write a program that converts an HTML document into plain text.

Input Data

Input file convert.in contains the HTML document.

Output Data

Output file convert.out will contain the plain text that is in the HTML document, structured in lines and with the same spacing.

Constraints and Statements

Example
convert.in convert.out

<html><head><title>vasile</title></head>
<body>
lots of text
<p>a paragraph</p><p> another paragraph<a href=
"http://www.liis.ro"> my high school </a> and again text </p> </body> </html>

vasile

lots of text
a paragraph another paragraph
 my high school  and again text

Time limit: 0.1 seconds/test

prof. Emanuela Cerchez
 Computer Science High School "Grigore Moisil" Iasi
 Contact:emanuela.cerchez@gmail.com