Isn't it golf challenge? http://codegolf.com/home-on-the-range

Anyway, few hints:

• when sorting, don't add standard sorting method ({ $a <=> $b }), just sort @list will suffice
• why are you sorting already sorted list?
• you don't really need printf in your case, simple print will be better
• for instead of foreach (4 letters shorter solution)
• don't waste letters for use strict or use warning or my ...

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