<p>another explanation of dynamic programming as it relates to USACO (scroll down to the very long post by Countersixte towards the bottom):</p>
<p><a href=“http://www.artofproblemsolving.com/Forum/viewtopic.php?t=19150&start=30[/url]”>http://www.artofproblemsolving.com/Forum/viewtopic.php?t=19150&start=30</a></p>
<p>If I am a US citizen, but living outside the US, can I still enter USACO?</p>
<p>amrik - anyone anywhere in the world can enter the USACO internet contests, regardless of citizenship, location, or age (although people past high school are classified as “observers”).</p>
<p>All US olympiad camps and teams to the international competitions are restricted to citizens or green card holders, but I don’t think there is a requirement that you be residing in the US. I suppose there could be a financial issue if it was going to cost a lot more for your transportation than they normally budget for.</p>