From 2145fe3dc17910991e5acbe1bdc8d1d8ec310e78 Mon Sep 17 00:00:00 2001
From: June McEnroe <june@causal.agency>
Date: Mon, 6 Dec 2021 10:42:57 -0500
Subject: Solve day 6 part 2

---
 2021/day06.pl | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

(limited to '2021')

diff --git a/2021/day06.pl b/2021/day06.pl
index b296a4c..3fc7ac2 100644
--- a/2021/day06.pl
+++ b/2021/day06.pl
@@ -1,16 +1,32 @@
 use strict;
 use warnings;
-my @fish = split(/,/, <>);
+my @init = split(/,/, <>);
+my @fish = @init;
 for (1..80) {
 	my @spawns;
-	for my $f (@fish) {
-		if ($f) {
-			$f--;
+	for (@fish) {
+		if ($_) {
+			$_--;
 		} else {
-			$f = 6;
+			$_ = 6;
 			push @spawns, 8;
 		}
 	}
 	push @fish, @spawns;
 }
 print scalar(@fish), "\n";
+my %counts;
+for (@init) {
+	$counts{$_}++;
+}
+for (1..256) {
+	my $zeros = $counts{0} // 0;
+	for (0..7) {
+		$counts{$_} = $counts{$_+1};
+	}
+	$counts{8} = $zeros;
+	$counts{6} += $zeros;
+}
+my $sum = 0;
+$sum += $_ for values %counts;
+print "$sum\n";
-- 
cgit 1.4.1

ary</a> <a href='/src/refs/?id=69acbe95a29318e321574274695bdc52c9008f1e'>refs</a> <a class='active' href='/src/log/bin/modem.c?showmsg=1&amp;follow=1'>log</a> <a href='/src/tree/bin/modem.c?id=69acbe95a29318e321574274695bdc52c9008f1e'>tree</a> <a href='/src/commit/bin/modem.c?id=69acbe95a29318e321574274695bdc52c9008f1e&amp;follow=1'>commit</a> <a href='/src/diff/bin/modem.c?id=69acbe95a29318e321574274695bdc52c9008f1e&amp;follow=1'>diff</a></td><td class='form'><form class='right' method='get' action='/src/log/bin/modem.c'>
<input type='hidden' name='id' value='69acbe95a29318e321574274695bdc52c9008f1e'/><input type='hidden' name='showmsg' value='1'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/src/log/?id=69acbe95a29318e321574274695bdc52c9008f1e&amp;showmsg=1&amp;follow=1'>root</a>/<a href='/src/log/bin?id=69acbe95a29318e321574274695bdc52c9008f1e&amp;showmsg=1&amp;follow=1'>bin</a>/<a href='/src/log/bin/modem.c?id=69acbe95a29318e321574274695bdc52c9008f1e&amp;showmsg=1&amp;follow=1'>modem.c</a> (<a href='/src/log/bin/modem.c?id=69acbe95a29318e321574274695bdc52c9008f1e&amp;showmsg=1'>unfollow</a>)</div><div class='content'><table class='list nowrap'><tr class='nohover'><th></th><th class='left'>Commit message (<a href='/src/log/bin/modem.c?id=69acbe95a29318e321574274695bdc52c9008f1e&amp;follow=1'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2022-02-14 22:44:50 -0500'>2022-02-14</span></td><td class='logsubject'><a href='/src/commit/www/git.causal.agency/cgit/ui-tree.h?id=0f2436b6f949b6ed6d887df7849fd4626843735a&amp;follow=1'>Remove cgit</a></td><td>June McEnroe</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
My fork of cgit is now &lt;https://git.causal.agency/cgit-pink/&gt;.


</td></tr>
<tr class='logheader'><td><span title='2022-02-14 00:14:26 +0000'>2022-02-14</span></td><td class='logsubject'><a href='/src/commit/www/git.causal.agency/filter.c?id=6cd9cf0d80fee8f067e81f30a0fe7b145a1e8533&amp;follow=1'>Narrow filter</a></td><td>June McEnroe</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
</td></tr>
<tr class='logheader'><td><span title='2022-02-10 18:09:07 -0500'>2022-02-10</span></td><td class='logsubject'><a href='/src/commit/txt/diminishing-shine.txt?id=5e7f21b8d8573cd2b53cec765ab3bce18ecd4375&amp;follow=1'>Correct diminishing shine, I think</a></td><td>June McEnroe