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use warnings; use strict; use feature 'say'; use MCE::Util; ... }, 1, 1e6; say "@$_" for reverse +(sort { $b->[1] <=> $a->[1] } @sizes)[0..19];
$ time perl ch-map.pl 922525 445 ... real 0m4.843s user 0m47.423s sys 0m0.265s
time perl ch-flow.pl ... real 0m4.661s user 0m47.057s sys 0m0.255s