Day 7: straightforward for Saturday

diff --git a/2024/13.pl b/2024/13.pl
new file mode 100755 (executable)
index 0000000..17f5a40
--- /dev/null
+++ b/2024/13.pl
@@ -0,0 +1,24 @@
+#!/usr/bin/perl -w
+
+use v5.40;
+
+my $sum;
+sub test {
+       my ($res, $v1, $v2, @rest) = @_;
+       if (defined $v2) {
+               test($res, $v1+$v2, @rest);
+               test($res, $v1*$v2, @rest);
+       } else {
+               if ($v1 == $res) {
+                       $sum += $res;
+                       die;
+               }
+       }
+}
+
+while (<>) {
+       my @v = /\d+/g;
+       eval { test(@v); };
+}
+
+say $sum;

diff --git a/2024/14.pl b/2024/14.pl
new file mode 100755 (executable)
index 0000000..40faef1
--- /dev/null
+++ b/2024/14.pl
@@ -0,0 +1,25 @@
+#!/usr/bin/perl -w
+
+use v5.40;
+
+my $sum;
+sub test {
+       my ($res, $v1, $v2, @rest) = @_;
+       if (defined $v2) {
+               test($res, $v1+$v2, @rest);
+               test($res, $v1*$v2, @rest);
+               test($res, "$v1$v2", @rest);
+       } else {
+               if ($v1 == $res) {
+                       $sum += $res;
+                       die;
+               }
+       }
+}
+
+while (<>) {
+       my @v = /\d+/g;
+       eval { test(@v); };
+}
+
+say $sum;