From e51a4c0837131625ebac0d54f900439e30b00091 Mon Sep 17 00:00:00 2001
From: Alpha Chen <alpha@kejadlen.dev>
Date: Fri, 13 Dec 2024 22:01:38 -0800
Subject: [PATCH] [2024][ruby][14.x]

---
 2024/ruby/day_14.rb | 56 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 2024/ruby/day_14.rb

diff --git a/2024/ruby/day_14.rb b/2024/ruby/day_14.rb
new file mode 100644
index 0000000..46cef6a
--- /dev/null
+++ b/2024/ruby/day_14.rb
@@ -0,0 +1,56 @@
+robots = DATA.read.scan(/-?\d+/).map(&:to_i).each_slice(4).to_a
+
+MAX_X = 101
+MAX_Y = 103
+# MAX_X = 11
+# MAX_Y = 7
+
+QUADRANTS = [
+  [(0...MAX_X/2), (0...MAX_Y/2)],
+  [(MAX_X/2+1..), (0...MAX_Y/2)],
+  [(0...MAX_X/2), (MAX_Y/2+1..)],
+  [(MAX_X/2+1..), (MAX_Y/2+1..)],
+]
+
+robots_s = -> {
+  (0..MAX_Y).map {|y|
+    (0..MAX_X).map {|x|
+      robots.any? {|r_x,r_y,_,_| r_x == x && r_y == y } ? ?# : ?.
+    }.join
+  }.join("\n")
+}
+
+(0..).each do |i|
+  robots.each do |robot|
+    p_x, p_y, v_x, v_y = robot
+    robot[0] = (p_x + v_x) % MAX_X
+    robot[1] = (p_y + v_y) % MAX_Y
+  end
+
+  if (i - 46) % 103 == 0
+    puts i
+    puts robots_s[]
+  end
+end
+
+pp [
+  [(0...MAX_X/2), (0...MAX_Y/2)],
+  [(MAX_X/2+1..), (0...MAX_Y/2)],
+  [(0...MAX_X/2), (MAX_Y/2+1..)],
+  [(MAX_X/2+1..), (MAX_Y/2+1..)],
+].map {|xx,yy| robots.count {|x,y,_,_| xx.cover?(x) && yy.cover?(y) }}
+  .inject(&:*)
+
+__END__
+p=0,4 v=3,-3
+p=6,3 v=-1,-3
+p=10,3 v=-1,2
+p=2,0 v=2,-1
+p=0,0 v=1,3
+p=3,0 v=-2,-2
+p=7,6 v=-1,-3
+p=3,0 v=-1,-2
+p=9,3 v=2,3
+p=7,3 v=-1,2
+p=2,4 v=2,-3
+p=9,5 v=-3,-3