Moved 2021 to a subdir

[aoc.git] / 2021 / 15.pl

diff --git a/2021/15.pl b/2021/15.pl
new file mode 100755 (executable)
index 0000000..19d53b8
--- /dev/null
+++ b/2021/15.pl
@@ -0,0 +1,18 @@
+#!/usr/bin/perl -w
+
+use v5.16;
+
+my %l = map { $_ => 1 } qw(2 3 4 7);
+my $sum;
+while (<>) {
+       chomp;
+       s/.*\| //;
+       $sum += grep { $l{length()} } split /\s+/;
+}
+
+say $sum;
+
+
+
+
+