tasks a-s

Task/Roman-numerals-Encode/Perl/roman-numerals-encode-1.pl

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+per quisque in I tum C conscribementum sic
+        hoc tum duos multiplicamentum comementum egresso scribe.
+cis

Task/Roman-numerals-Encode/Perl/roman-numerals-encode-2.pl

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+use v5.12;
+use Sub::SmartMatch;
+use SmartMatch::Sugar qw(any);
+use List::MoreUtils qw( natatime );
+
+my %symbols = (
+    1 => "I", 5 => "V", 10 => "X", 50 => "L", 100 => "C",
+    500 => "D", 1_000 => "M"
+);
+
+my @subtractors = (
+        1_000, 100,  500, 100,  100, 10,  50, 10,  10, 1,  5, 1,  1, 0
+);
+
+multi roman => [0], sub { '' };
+multi roman => any, sub {
+    my $n = shift;
+    my $iter = natatime 2, @subtractors;
+    while( my ($cut, $minus) = $iter->() ) {
+        $n >= $cut
+            and return $symbols{$cut} . roman($n - $cut);
+        $n >= $cut - $minus
+            and return $symbols{$minus} . roman($n + $minus);
+    }
+};

Task/Roman-numerals-Encode/Perl/roman-numerals-encode-3.pl

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+say roman($_) for 1..2_012;