1 files changed, 110 insertions, 0 deletions
diff --git a/2019/src/bin/day_25.rs b/2019/src/bin/day_25.rs
new file mode 100644
index 0000000..522789e
--- /dev/null
+++ b/2019/src/bin/day_25.rs
@@ -0,0 +1,110 @@
+use aoc2019::*;
+use std::io;
+use std::io::prelude::*;
+use std::process;
+use structopt::StructOpt;
+
+#[derive(Debug, StructOpt)]
+#[structopt(name = "Day 25: Cryostasis")]
+/// Pilots a robot to save Santa!
+///
+/// See https://adventofcode.com/2019/day/25 for details.
+struct Opt {}
+
+fn main() {
+    let stdin = io::stdin();
+    let _opt = Opt::from_args();
+
+    let program: IntcodeProgram = stdin
+        .lock()
+        .split(b',')
+        .map(|x| exit_on_failed_assertion(x, "Error reading input"))
+        .map(|x| exit_on_failed_assertion(String::from_utf8(x), "Input was not valid UTF-8"))
+        .map(|x| exit_on_failed_assertion(x.trim().parse::<Intcode>(), "Invalid number"))
+        .collect::<IntcodeProgram>();
+
+    let input = vec![
+        "east",
+        "take antenna",
+        "west",
+        "north",
+        "take weather machine",
+        "north",
+        "take klein bottle",
+        "east",
+        "take spool of cat6",
+        "east",
+        "south",
+        "take mug",
+        "north",
+        "north",
+        "west",
+        "north",
+        "take cake",
+        "south",
+        "east",
+        "east",
+        "north",
+        "north",
+        "take tambourine",
+        "south",
+        "south",
+        "south",
+        "take shell",
+        "north",
+        "west",
+        "south",
+        "west",
+        "south",
+        "south",
+        "inv",
+        //"drop mug",
+        //"drop weather machine",
+        "drop cake",
+        "drop shell",
+        "drop klein bottle",
+        "drop tambourine",
+        //"drop antenna",
+        //"drop spool of cat6",
+        "east",
+    ];
+
+    let result = exit_on_failed_assertion(
+        program
+            .with_input(
+                input
+                    .iter()
+                    .flat_map(|line| {
+                        line.chars()
+                            .map(|c| Intcode::from(c as u8))
+                            .chain(vec![Intcode::from(10)].into_iter())
+                    })
+                    .collect(),
+            )
+            .run_to_termination_or_input()
+            .output_into_result(),
+        "Program failed",
+    );
+
+    println!(
+        "{}",
+        result
+            .drop_last()
+            .unwrap()
+            .iter()
+            .flat_map(|c| c.to_signed_bytes_be())
+            .map(|c| c as char)
+            .collect::<String>()
+    );
+    println!("{}", result.last().unwrap());
+}
+
+fn exit_on_failed_assertion<A, E: std::error::Error>(data: Result<A, E>, message: &str) -> A {
+    match data {
+        Ok(data) => data,
+        Err(e) => {
+            eprintln!("{}: {}", message, e);
+            process::exit(1);
+        }
+    }
+}