summary refs log tree commit diff homepage
path: root/2021/day01.pl
diff options
context:
space:
mode:
authorJune McEnroe <june@causal.agency>2021-12-01 13:24:24 -0500
committerJune McEnroe <june@causal.agency>2021-12-01 13:24:24 -0500
commita483c319ce6bb2d7a1b6fb77f324545b149c8664 (patch)
tree7c0590b7065f9aeb48fb16c219d999d866f9edc6 /2021/day01.pl
parentSolve day 18 part 2 (diff)
downloadaoc-a483c319ce6bb2d7a1b6fb77f324545b149c8664.tar.gz
aoc-a483c319ce6bb2d7a1b6fb77f324545b149c8664.zip
Solve day 1 part 1
Diffstat (limited to '2021/day01.pl')
-rw-r--r--2021/day01.pl6
1 files changed, 6 insertions, 0 deletions
diff --git a/2021/day01.pl b/2021/day01.pl
new file mode 100644
index 0000000..f4ab273
--- /dev/null
+++ b/2021/day01.pl
@@ -0,0 +1,6 @@
+my $last, $incs;
+while (<>) {
+	$incs++ if ($last && $_ > $last);
+	$last = $_;
+}
+print "$incs\n";