From d93d20427b7a15dd07dbb13a4203b8168ee03f6c Mon Sep 17 00:00:00 2001
From: Justin Wernick <justin@worthe-it.co.za>
Date: Tue, 31 Dec 2019 21:04:18 +0200
Subject: Springbot walking, running, and jumping!

---
 src/bin/day_21.rs | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 51 insertions(+), 4 deletions(-)

diff --git a/src/bin/day_21.rs b/src/bin/day_21.rs
index 106ce82..7fa781c 100644
--- a/src/bin/day_21.rs
+++ b/src/bin/day_21.rs
@@ -23,9 +23,17 @@ fn main() {
         .map(|x| exit_on_failed_assertion(x.trim().parse::<Intcode>(), "Invalid number"))
         .collect::<IntcodeProgram>();
 
-    let result = exit_on_failed_assertion(
+    let walk_result = exit_on_failed_assertion(
         {
-            let input = vec!["NOT A J\n", "WALK\n"];
+            let input = vec![
+                "NOT T T\n",
+                "AND A T\n",
+                "AND B T\n",
+                "AND C T\n",
+                "NOT T J\n",
+                "AND D J\n",
+                "WALK\n",
+            ];
             program
                 .with_input(
                     input
@@ -40,7 +48,7 @@ fn main() {
 
     println!(
         "{}",
-        result
+        walk_result
             .drop_last()
             .unwrap()
             .iter()
@@ -48,7 +56,46 @@ fn main() {
             .map(|c| c as char)
             .collect::<String>()
     );
-    println!("{}", result.last().unwrap());
+    println!("{}", walk_result.last().unwrap());
+
+    let run_result = exit_on_failed_assertion(
+        {
+            // (!A || !B || !C) && D && (E || H)
+            let input = vec![
+                "OR E J\n",
+                "OR H J\n",
+                "AND D J\n",
+                "NOT T T\n",
+                "AND A T\n",
+                "AND B T\n",
+                "AND C T\n",
+                "NOT T T\n",
+                "AND T J\n",
+                "RUN\n",
+            ];
+            program
+                .with_input(
+                    input
+                        .iter()
+                        .flat_map(|line| line.chars().map(|c| Intcode::from(c as u8)))
+                        .collect(),
+                )
+                .execute()
+        },
+        "Program failed",
+    );
+
+    println!(
+        "{}",
+        run_result
+            .drop_last()
+            .unwrap()
+            .iter()
+            .flat_map(|c| c.to_signed_bytes_be())
+            .map(|c| c as char)
+            .collect::<String>()
+    );
+    println!("{}", run_result.last().unwrap());
 }
 
 fn exit_on_failed_assertion<A, E: std::error::Error>(data: Result<A, E>, message: &str) -> A {
-- 
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