1999/2000 ACM International Collegiate Programming Contest
University of Ulm Local Contest

# Problem H: HTML

Source file: html.(c|C|pas|java)
Input file: html.in

If you ever tried to read a html document on a Macintosh, you know how hard it is if no Netscape is installed.
Now, who can forget to install a HTML browser? This is very easy because most of the times you don't need one on a MAC because there is a Acrobate Reader which is native to MAC. But if you ever need one, what do you do?
Your task is to write a small html-browser. It should only display the content of the input-file and knows only the html commands (tags) `<br>` which is a linebreak and `<hr>` which is a horizontal ruler. Then you should treat all tabulators, spaces and newlines as one space and display the resulting text with no more than 80 characters on a line.

### Input Specification

The input consists of a text you should display. This text consists of words and HTML tags separated by one or more spaces, tabulators or newlines.
A word is a sequence of letters, numbers and punctuation. For example, "`abc,123`" is one word, but "`abc, 123`" are two words, namely "`abc,`" and "`123`". A word is always shorter than 81 characters and does not contain any '<' or '>'. All HTML tags are either `<br>` or `<hr>`.

### Output Specification

You should display the the resulting text using this rules:

- If you read a word in the input and the resulting line does not get longer than 80 chars, print it, else print it on a new line.
- If you read a `<br>` in the input, start a new line.
- If you read a `<hr>` in the input, start a new line unless you already are at the beginning of a line, display 80 characters of '-' and start a new line (again).

The last line is ended by a newline character.

### Sample Input

    Hallo, dies ist eine
    ziemlich lange Zeile, die in Html
    aber nicht umgebrochen wird.
    <br>
    Zwei <br> <br> produzieren zwei Newlines.
    Es gibt auch noch das tag <hr> was einen Trenner darstellt.
    Zwei <hr> <hr> produzieren zwei Horizontal Rulers.
    Achtung       mehrere Leerzeichen irritieren

    Html genauso wenig wie

    mehrere Leerzeilen.

### Sample Output

    Hallo, dies ist eine ziemlich lange Zeile, die in Html aber nicht umgebrochen
    wird.
    Zwei

    produzieren zwei Newlines. Es gibt auch noch das tag
    --------------------------------------------------------------------------------
    was einen Trenner darstellt. Zwei
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    produzieren zwei Horizontal Rulers. Achtung mehrere Leerzeichen irritieren Html
    genauso wenig wie mehrere Leerzeilen.