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>c:\progs\perl588\bin\perl -l 770193.pl
42
...

>c:\progs\perl5100\bin\perl -l 770193.pl
00

#!/usr/bin/perl     

...
  #print 0+@{$c},  0+@{$d},  "\n";    > Alternatives
  #print 0+@$c,    0+@$d,    "\n";   /
}