Crossposted to
StackOverflow. It's considered polite to inform about crossposting so that people not attending both sites don't waste their efforts hacking a solution to a problem already solved at the other end of the internet.
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,