Maybe, maybe not. For simple jobs run from a cron or similiar, where locking may not be an issue, a simple counter file can often be the most suitable solution (esp. where ease of distrib. is an issue).

IMHO, needless to say, but KISS.

map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2*$d*$e+$a,$e**2
-$d**2+$b);$c=$d**2+$e**2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20
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