perl -E'@x="033544355436688779880066555766"=~/./g;$_=<>;chop;print;while($_-4){split//,"99aabb87780";$x=4*!$_;$x+=hex(pop@_)*!!-$&+!!$1*($x[$1]+7)+$x[$2+20]+$x[$3]while s/(.??)([^1]?)(1?.)$//;say" is $x.";print$_=$x}say" is magic."'