From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Mon, 4 Dec 2023 07:31:26 +0000 (+0100)
Subject: Day 4: not bad, but too slow
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=commitdiff_plain;h=37802cc99a47b0fb10fd37fe7886f3d812b0d989;p=aoc.git

Day 4: not bad, but too slow
---

diff --git a/2023/07.pl b/2023/07.pl
new file mode 100755
index 0000000..eb32805
--- /dev/null
+++ b/2023/07.pl
@@ -0,0 +1,12 @@
+#!/usr/bin/perl -w
+
+use v5.38;
+
+my $sum;
+while (<>) {
+	my ($have, $win) = /: (.*) \| (.*)/;
+	my %is_win = map { $_ => 1 } ($win =~ /(\d+)/g);
+	my $count = grep { $is_win{$_} } ($have =~ /(\d+)/g);
+	$sum += 1 << ($count-1) if $count;
+}
+say $sum;
diff --git a/2023/08.pl b/2023/08.pl
new file mode 100755
index 0000000..3c558e5
--- /dev/null
+++ b/2023/08.pl
@@ -0,0 +1,22 @@
+#!/usr/bin/perl -w
+
+use v5.38;
+
+my $sum;
+my @scores;
+while (<>) {
+	my ($have, $win) = /: (.*) \| (.*)/;
+	my %is_win = map { $_ => 1 } ($win =~ /(\d+)/g);
+	push @scores, scalar grep { $is_win{$_} } ($have =~ /(\d+)/g);
+}
+
+my @cards = (1) x @scores;
+while (@scores) {
+	my $n = shift @scores;
+	my $c = shift @cards;
+	$sum += $c;
+	next if !$n;
+	$cards[$_] += $c for 0 .. $n-1;
+}
+	
+say $sum;