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Perl fun (at last)

After reading something about dynamic programming problems (and thanks to Perl's very liberal parser for the alignment)...

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map{ord}"a#Q, J!!A%(V&)#(M-!!P).P"=~/./g;for($w..14567){if($_%$w){$p=$_-$w;$m[
:$y}}for(;$n;$n--){$m[$a=$n*$w+$W]!=$m[$a-$w]and print chr$v[$n]and$W-=$w[$n]}

The only fact it exploits is that undefined values implicitly become 0 when used in calculations. Indeed, if the necessary declarations and initializations are added (not shown), the code runs without warnings under use warnings; and use strict;.