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Some times I get WA (Wrong Answer) for printing an extra newline, and sometimes for NOT printing an extra newline. I think the verdict for such outputs should be PE (Presentation Error). Also note that on http://uva.onlinejudge.org/index.php?op ... &Itemid=31 has mentioned about linefeeds (in the section for PE), and I think "newline" and "linefeed" are the same thing.
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The current PE algorithm judges an extra blank line as WA. That's the way it is, sorry. In any case, PE is as wrong as WA. Only an AC code is considered correct.
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