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print"\ec";for$b(0..15){$e[$b].=int 2*rand for 0..($h=30)}{$b=-1;for$f
+(@
a=@e){$e[++$b]="";print"\e[$b\H$f$/";for$c(0..$h){$l=0;for($b-1..$b+1)
+{$
_=$_>0&&$_<$h?substr$a[$_],$c?$c-1:$c,$c==$h?2:$c?3:2:1;$l+=tr/0//}$l-
+=$
d=!substr$f,$c,1;$e[$b].=$l==3||$l==2&&$d?0:$"}}select$q,$q,$q,0.1;red
+o}

for$b(0..15){$e[$b].=int 2*rand for 0..30}  # (random)

...
{$e[++$b]="";print"\e[$b\H$f$/";for$c(0..30){for($b-1..$b+1){$_=$_>0&&
+$_
<30?substr$a[$_],$c?$c-1:$c,$c==30?2:$c?3:2:1;$l+=tr/0//}$l-=$d=!subst
+r$
f,$c,1;$e[$b].=$l==3||$l==2&&$d?0:$";$l=0}}select$q,$q,$q,0.1;redo}