From 2d12f6ec2294e36ae090fdd1e10025452ec1a480 Mon Sep 17 00:00:00 2001
From: alyx <alyx@aleteoryx.me>
Date: Sun, 19 Nov 2023 14:55:43 -0500
Subject: Initial commit, done up to 2015.7

---
 2015/rs/src/six.rs | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 2015/rs/src/six.rs

(limited to '2015/rs/src/six.rs')

diff --git a/2015/rs/src/six.rs b/2015/rs/src/six.rs
new file mode 100644
index 0000000..0fe0d2d
--- /dev/null
+++ b/2015/rs/src/six.rs
@@ -0,0 +1,57 @@
+static INPUT: &'static str = include_str!("six.txt");
+
+#[derive(Debug)]
+enum LightCommand {
+  TurnOff,
+  TurnOn,
+  Toggle
+}
+
+fn main() {
+  let valueified = INPUT.split('\n').filter(|s| !s.is_empty()).map(|s| {
+    let mut rsplit = s.rsplit(' ');
+    let mut cd = rsplit.next().unwrap().split(',').map(str::parse::<usize>).map(Result::unwrap);
+    let mut ab = rsplit.nth(1).unwrap().split(',').map(str::parse::<usize>).map(Result::unwrap);
+    let ab = (ab.next().unwrap(), ab.next().unwrap());
+    let cd = (cd.next().unwrap(), cd.next().unwrap());
+    match &s[0..7] {
+      "turn on" => (LightCommand::TurnOn, ab,cd),
+      "toggle " => (LightCommand::Toggle, ab,cd),
+      "turn of" => (LightCommand::TurnOff, ab,cd),
+      _ => unreachable!()
+    }
+  });
+
+  let mut lights = vec![false; 1_000_000];
+  for (cmd, (x1, y1), (x2, y2)) in valueified.clone() {
+    use LightCommand::*;
+    for x in x1..=x2 {
+      for y in y1..=y2 {
+        match cmd {
+          TurnOff => { lights[x + y * 1000] = false; },
+          TurnOn => { lights[x + y * 1000] = true; },
+          Toggle => { lights[x + y * 1000] = !lights[x + y * 1000]; }
+        }
+      }
+    }
+  }
+  let light_count = lights.into_iter().filter(|a| *a).count();
+  println!("Lit light count: {light_count}");
+
+  let mut lights = vec![0u64; 1_000_000];
+  for (cmd, (x1, y1), (x2, y2)) in valueified {
+    use LightCommand::*;
+    for x in x1..=x2 {
+      for y in y1..=y2 {
+        match cmd {
+          TurnOff if lights[x + y * 1000] != 0 => { lights[x + y * 1000] -= 1; },
+          TurnOn => { lights[x + y * 1000] += 1; },
+          Toggle => { lights[x + y * 1000] += 2 },
+          _ => ()
+        }
+      }
+    }
+  }
+  let light_count = lights.into_iter().sum::<u64>();
+  println!("Lit light count(Ancient Nordic Elvish): {light_count}");
+}
-- 
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