It's not possible to know which pixels have to be recalculated when an
object is changed.
This is due to shadows, reflections, refractions, photons, radiosity and
so on.
--
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):_;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/
