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   my @input = 100..200;

...
      print "$_\n";
   };

   use MCE::Loop max_workers => 8, chunk_size => 1;

...
      MCE->print("$_\n");
   } @input;

   use MCE::Map;
   use Time::HiRes 'sleep';  # for simulating work
...

   print "@a\n";