day 20 was a doozy

day20/.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

day20/.idea/day20.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="EMPTY_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

day20/.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/day20.iml" filepath="$PROJECT_DIR$/.idea/day20.iml" />
+    </modules>
+  </component>
+</project>

day20/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

day20/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "day20"
+version = "0.1.0"

day20/src/main.rs

@@ -1,3 +1,312 @@
-fn main() {
-    println!("Hello, world!");
+use std::{env, fs};
+use std::collections::{HashMap, HashSet, VecDeque};
+use Module::{Broadcaster, Conjunction, FlipFlop, Counter};
+use crate::PulseKind::{High, Low};
+
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+enum PulseKind { High, Low }
+
+#[derive(Clone, Debug)]
+struct Pulse { kind: PulseKind, origin: String, destination: String }
+
+enum Module {
+    Broadcaster { out: Vec<String> },
+    Conjunction { out: Vec<String>, memory: HashMap<String, PulseKind> },
+    FlipFlop { out: Vec<String>, state: bool },
+    Counter { out: Vec<String>, high: i32, low: i32}
 }
+
+fn main() {
+    println!("Hello, AoC day 19!");
+
+    let args: Vec<String> = env::args().collect();
+    if args.len() != 2 {
+        println!("wrong number of arguments!");
+        std::process::exit(1);
+    }
+
+    let file_path = &args[1];
+    let contents = fs::read_to_string(file_path).expect("Should have been able to read the file");
+
+    let mut rack: HashMap<String, Module> = HashMap::new();
+    for line in contents.lines() {
+        let (name, connections) = line.split_once(" -> ").unwrap();
+        let outputs: Vec<String> = connections.split(", ").map(|it| it.to_string()).collect();
+        match name.chars().nth(0).unwrap() {
+            '&' => rack.insert(name[1..].to_string(), Conjunction { out: outputs, memory: HashMap::new() } ),
+            '%' => rack.insert(name[1..].to_string(), FlipFlop { out: outputs, state: false } ),
+            _ => rack.insert(name.to_string(), Broadcaster { out: outputs } ),
+        };
+    }
+
+    // print out the rack and also tally up the listed outputs
+    println!("the rack looks like this:");
+    let mut all_listed_outputs: HashSet<String> = HashSet::new();
+    for (key, value) in &rack {
+        match value {
+            Broadcaster { out } => {
+                println!("{} -> {}", key, out.join(", "));
+                for o in out { all_listed_outputs.insert(o.to_string()); }
+            }
+            Conjunction { out, .. } => {
+                println!("&{} -> {}", key, out.join(", "));
+                for o in out { all_listed_outputs.insert(o.to_string()); }
+            }
+            FlipFlop { out, .. } => {
+                println!("%{} -> {}", key, out.join(", "));
+                for o in out {  all_listed_outputs.insert(o.to_string()); }
+            }
+            Counter { out, .. } => {
+                println!("${} -> {}", key, out.join(", "));
+                for o in out {  all_listed_outputs.insert(o.to_string()); }
+            }
+        }
+    }
+    // make sure all the outputs are present as outputs
+    for label in all_listed_outputs {
+        if rack.get(&label).is_none() {
+            rack.insert(label, Counter{ out: Vec::new(), high: 0, low: 0});
+        }
+    }
+
+    println!("let's fix up those conjunction modules so they know about all their inputs and are initialized properly to low.");
+    let mut conjunctions_and_inputs: HashMap<String, Vec<String>> = HashMap::new();
+
+    // go through and take note of every cnojunction module in our conjunctions_and_inputs collection
+    for (label, _module) in &rack {
+        match rack.get(label).unwrap() {
+            Conjunction{ out:_,memory:_} => { conjunctions_and_inputs.insert(label.to_string(), Vec::new()); }
+            _ => {} // get fucked!!!
+        };
+    }
+
+    // look at every module. if it's got a conjunction in the output, list it in the collection of conjunctions and inputs
+    for (label, value) in &rack {
+        match value {
+            Broadcaster{ out } => {
+                for o in out {
+                    if let Conjunction { .. } = rack.get(o).unwrap() {
+                        conjunctions_and_inputs.get_mut(o).unwrap().push(label.to_string())
+                    }
+                }
+            }
+            Conjunction{ out, .. } => {
+                for o in out {
+                    if let Conjunction { .. } = rack.get(o).unwrap() {
+                        conjunctions_and_inputs.get_mut(o).unwrap().push(label.to_string())
+                    }
+                }
+            }
+            FlipFlop{ out, .. } => {
+                for o in out {
+                    if let Conjunction { .. } = rack.get(o).unwrap() {
+                        conjunctions_and_inputs.get_mut(o).unwrap().push(label.to_string())
+                    }
+                }
+            }
+            Counter { out, .. } => {
+                for o in out {
+                    if let Conjunction { .. } = rack.get(o).unwrap() {
+                        conjunctions_and_inputs.get_mut(o).unwrap().push(label.to_string())
+                    }
+                }
+            }
+        }
+    }
+
+    // connect each input t othe cnojunctino module
+    for (destination, inputs) in conjunctions_and_inputs {
+        for start in inputs {
+            connect(start, destination.to_string(), &mut rack);
+        }
+    }
+
+    let mut high = 0;
+    let mut low = 0;
+    for _i in 0..1000 {
+        let (h, l) = push_the_button_and_count(&mut rack);
+        println!("there were {high} high pulses and {low} low pulses.");
+        high += h;
+        low += l;
+    }
+    println!("after 1000 pushes, we have sent {low} low pulses and {high} high pulses");
+    let product = (high as i64) * (low as i64);
+    println!("that's aproduct of {product}");
+
+    println!("the set of things outputting to rx is:");
+    let mut goes_to_rx: HashSet<String> = HashSet::new();
+    for (name, module) in &rack {
+        match module {
+            Broadcaster { out, .. } => { if out.contains(&String::from("rx")) {goes_to_rx.insert(name.to_string());} }
+            Conjunction { out, .. } => {if out.contains(&String::from("rx")) {goes_to_rx.insert(name.to_string());}}
+            FlipFlop { out, .. } => {if out.contains(&String::from("rx")) {goes_to_rx.insert(name.to_string());}}
+            Counter { out, .. } => {if out.contains(&String::from("rx")) {goes_to_rx.insert(name.to_string());}}
+        }
+    }
+    println!("{goes_to_rx:?}");
+    if let Conjunction{memory, ..} = rack.get(goes_to_rx.iter().nth(0).unwrap()).unwrap() {
+        for x in memory.keys() {
+            print!("{x}, ");
+        }
+        println!("are all options for what we're interestd in");
+    }
+
+    let things_to_watch: HashSet<String> = String::from("qq,sj,ls,bg").split(',').map(|x| x.to_string()).collect();
+    let mut i=1001;
+    loop {
+        let interest = push_the_button_and_watch(&mut rack, &things_to_watch, goes_to_rx.iter().nth(0).unwrap().to_string());
+
+        if interest {
+            println!("interesting things have happened on press {i}");
+        }
+
+
+        if i % 100_000 == 0 {
+            if let Counter { low, .. } = rack.get("rx").unwrap() {
+                println!("rx has been hit with a low pulse {low} times after {i} buttons.");
+            }
+        }
+        i+=1
+    }
+
+
+}
+
+fn connect(origin: String, dest_conj: String, rack: &mut HashMap<String, Module>) {
+    let conjunction_module = rack.get_mut(&dest_conj).unwrap();
+    if let Conjunction { memory, ..} = conjunction_module {
+        memory.insert(origin, Low);
+    }
+}
+
+fn push_the_button_and_count(rack: &mut HashMap<String, Module>) -> (i32, i32) {
+    let mut pulses = VecDeque::from([Pulse {
+        kind: Low,
+        origin: String::from("button"),
+        destination: String::from("broadcaster") }]);
+    let mut high = 0;
+    let mut low = 0;
+    while !pulses.is_empty() {
+        let pulse = pulses.pop_front().unwrap();
+        let _origin = pulse.origin.to_string();
+        let _dest = pulse.destination.to_string();
+        let _kind = match pulse.kind {
+            High => { "high" }
+            Low => { "low" }
+        };
+        //println!("{origin} -{kind}-> {dest}");
+        match pulse.kind {
+            High => { high += 1; }
+            Low => { low += 1; }
+        }
+        let new_pulses = handle_pulse(&pulse, rack);
+        for x in new_pulses {
+            pulses.push_back(x);
+        }
+    }
+    return (high, low);
+}
+
+fn push_the_button_and_watch(rack: &mut HashMap<String, Module>,
+                             modules_to_watch: &HashSet<String>,
+                             conjunction: String) -> bool {
+    let mut pulses = VecDeque::from([Pulse {
+        kind: Low,
+        origin: String::from("button"),
+        destination: String::from("broadcaster") }]);
+    let mut high = 0;
+    let mut low = 0;
+    let mut of_interest = false;
+    while !pulses.is_empty() {
+        let pulse = pulses.pop_front().unwrap();
+
+        let _origin = pulse.origin.to_string();
+        let _dest = pulse.destination.to_string();
+        let _kind = match pulse.kind {
+            High => { "high" }
+            Low => { "low" }
+        };
+
+        if modules_to_watch.contains(&_origin) && pulse.kind == Low {
+            if let Conjunction {memory, ..} = &rack.get(&conjunction).unwrap() {
+                let pulses: HashSet<&PulseKind>= modules_to_watch.iter().map(|x| memory.get(x).unwrap()).collect();
+                if pulses.contains(&High) {
+                    of_interest = true;
+                }
+            }
+        }
+
+        //println!("{origin} -{kind}-> {dest}");
+        let new_pulses = handle_pulse(&pulse, rack);
+        for x in new_pulses {
+            pulses.push_back(x);
+        }
+    }
+    return of_interest;
+}
+
+fn handle_pulse(pulse: &Pulse, rack: &mut HashMap<String, Module>) -> Vec<Pulse> {
+    // a pulse has arrived!~ let's handle it.
+    let destination_module = rack.get_mut(&pulse.destination).unwrap();
+
+    match destination_module {
+        Broadcaster{ out } => {
+            // broadcast to all the outputs!
+            return out.iter().map(|d| Pulse {
+                kind: pulse.kind,
+                origin: pulse.destination.to_string(),
+                destination: d.to_string() }).collect(); }
+
+        Conjunction{ out, memory} => {
+            // update the memory.
+            memory.insert(pulse.origin.to_string(), pulse.kind);
+
+            // go through the memories and look for one thats low, in which case we output a low pulse.
+            for value in memory.values() {
+                if *value == Low {
+                    // if any of the memories is low, output a high pulse
+                    return out.iter().map(|d| Pulse {
+                        kind: High,
+                        origin: pulse.destination.to_string(),
+                        destination: d.to_string() }).collect();
+                }
+            }
+
+            // if we've gotten here, all the memories were high, so send a low pulse
+            out.iter().map(|d| Pulse {
+                kind: Low,
+                origin: pulse.destination.to_string(),
+                destination: d.to_string() }).collect()}
+
+        FlipFlop{ out, state} => {
+            match pulse.kind {
+                High => {
+                    // on a high pulse, flip flops produce nothijng
+                    Vec::new()
+                },
+                Low => {
+                    // on a low pulse, we flip it, and then send an appropriate pulse (high if it's on, low if it's off)
+                    *state = !*state;
+                    out.iter().map(|d| Pulse {
+                        kind: match state { true => High, false => Low },
+                        origin: pulse.destination.to_string(),
+                        destination: d.to_string() }).collect()
+                }
+            }
+        }
+
+        Counter { high, low, ..} => {
+            match pulse.kind {
+                High => {
+                    *high += 1;
+                },
+                Low => {
+                    *low += 1;
+                }
+            }
+            Vec::new()
+        }
+    }
+
+}
+

day20/target/.rustc_info.json

@@ -0,0 +1 @@
+{"rustc_fingerprint":14318102787793507742,"outputs":{"15729799797837862367":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/shoofle/.rustup/toolchains/stable-x86_64-apple-darwin\noff\npacked\nunpacked\n___\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"cmpxchg16b\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"sse4.1\"\ntarget_feature=\"ssse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.74.1 (a28077b28 2023-12-04)\nbinary: rustc\ncommit-hash: a28077b28a02b92985b3a3faecf92813155f1ea1\ncommit-date: 2023-12-04\nhost: x86_64-apple-darwin\nrelease: 1.74.1\nLLVM version: 17.0.4\n","stderr":""}},"successes":{}}

day20/target/CACHEDIR.TAG

@@ -0,0 +1,3 @@
+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by cargo.
+# For information about cache directory tags see https://bford.info/cachedir/

day20/target/debug/.fingerprint/day20-5957a2c0ba2264ed/bin-day20

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+18e6038189945265

day20/target/debug/.fingerprint/day20-5957a2c0ba2264ed/bin-day20.json

@@ -0,0 +1 @@
+{"rustc":4443399816165520464,"features":"[]","target":14331336351448024546,"profile":237655285757591511,"path":1684066648322511884,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug/.fingerprint/day20-5957a2c0ba2264ed/dep-bin-day20"}}],"rustflags":[],"metadata":7797948686568424061,"config":2202906307356721367,"compile_kind":0}

day20/target/debug/.fingerprint/day20-5957a2c0ba2264ed/invoked.timestamp

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+This file has an mtime of when this was started.

day20/target/debug/.fingerprint/day20-5957a2c0ba2264ed/output-bin-day20

@@ -0,0 +1,5 @@
+{"message":"unused variable: `high`","code":{"code":"unused_variables","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":8317,"byte_end":8321,"line_start":217,"line_end":217,"column_start":13,"column_end":17,"is_primary":true,"text":[{"text":"    let mut high = 0;","highlight_start":13,"highlight_end":17}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`#[warn(unused_variables)]` on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"if this is intentional, prefix it with an underscore","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":8317,"byte_end":8321,"line_start":217,"line_end":217,"column_start":13,"column_end":17,"is_primary":true,"text":[{"text":"    let mut high = 0;","highlight_start":13,"highlight_end":17}],"label":null,"suggested_replacement":"_high","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: unused variable: `high`\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:217:13\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m217\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    let mut high = 0;\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m            \u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[33mhelp: if this is intentional, prefix it with an underscore: `_high`\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `#[warn(unused_variables)]` on by default\u001b[0m\n\n"}
+{"message":"unused variable: `low`","code":{"code":"unused_variables","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":8339,"byte_end":8342,"line_start":218,"line_end":218,"column_start":13,"column_end":16,"is_primary":true,"text":[{"text":"    let mut low = 0;","highlight_start":13,"highlight_end":16}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"if this is intentional, prefix it with an underscore","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":8339,"byte_end":8342,"line_start":218,"line_end":218,"column_start":13,"column_end":16,"is_primary":true,"text":[{"text":"    let mut low = 0;","highlight_start":13,"highlight_end":16}],"label":null,"suggested_replacement":"_low","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: unused variable: `low`\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:218:13\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m218\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    let mut low = 0;\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m            \u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[33mhelp: if this is intentional, prefix it with an underscore: `_low`\u001b[0m\n\n"}
+{"message":"variable does not need to be mutable","code":{"code":"unused_mut","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":8313,"byte_end":8321,"line_start":217,"line_end":217,"column_start":9,"column_end":17,"is_primary":true,"text":[{"text":"    let mut high = 0;","highlight_start":9,"highlight_end":17}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"`#[warn(unused_mut)]` on by default","code":null,"level":"note","spans":[],"children":[],"rendered":null},{"message":"remove this `mut`","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":8313,"byte_end":8317,"line_start":217,"line_end":217,"column_start":9,"column_end":13,"is_primary":true,"text":[{"text":"    let mut high = 0;","highlight_start":9,"highlight_end":13}],"label":null,"suggested_replacement":"","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: variable does not need to be mutable\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:217:9\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m217\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    let mut high = 0;\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m----\u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^^\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12mhelp: remove this `mut`\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m= \u001b[0m\u001b[0m\u001b[1mnote\u001b[0m\u001b[0m: `#[warn(unused_mut)]` on by default\u001b[0m\n\n"}
+{"message":"variable does not need to be mutable","code":{"code":"unused_mut","explanation":null},"level":"warning","spans":[{"file_name":"src/main.rs","byte_start":8335,"byte_end":8342,"line_start":218,"line_end":218,"column_start":9,"column_end":16,"is_primary":true,"text":[{"text":"    let mut low = 0;","highlight_start":9,"highlight_end":16}],"label":null,"suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"remove this `mut`","code":null,"level":"help","spans":[{"file_name":"src/main.rs","byte_start":8335,"byte_end":8339,"line_start":218,"line_end":218,"column_start":9,"column_end":13,"is_primary":true,"text":[{"text":"    let mut low = 0;","highlight_start":9,"highlight_end":13}],"label":null,"suggested_replacement":"","suggestion_applicability":"MachineApplicable","expansion":null}],"children":[],"rendered":null}],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: variable does not need to be mutable\u001b[0m\n\u001b[0m   \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m--> \u001b[0m\u001b[0msrc/main.rs:218:9\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m\u001b[1m\u001b[38;5;12m218\u001b[0m\u001b[0m \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\u001b[0m \u001b[0m\u001b[0m    let mut low = 0;\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m----\u001b[0m\u001b[0m\u001b[1m\u001b[33m^^^\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m|\u001b[0m\n\u001b[0m    \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12m| \u001b[0m\u001b[0m        \u001b[0m\u001b[0m\u001b[1m\u001b[38;5;12mhelp: remove this `mut`\u001b[0m\n\n"}
+{"message":"4 warnings emitted","code":null,"level":"warning","spans":[],"children":[],"rendered":"\u001b[0m\u001b[1m\u001b[33mwarning\u001b[0m\u001b[0m\u001b[1m: 4 warnings emitted\u001b[0m\n\n"}

day20/target/debug/.fingerprint/day20-cb29eaa541c15fba/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

day20/target/debug/.fingerprint/day20-cb29eaa541c15fba/test-bin-day20

@@ -0,0 +1 @@
+a91978ac461ff54b

day20/target/debug/.fingerprint/day20-cb29eaa541c15fba/test-bin-day20.json

@@ -0,0 +1 @@
+{"rustc":4443399816165520464,"features":"[]","target":14331336351448024546,"profile":13053956386274884697,"path":1684066648322511884,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug/.fingerprint/day20-cb29eaa541c15fba/dep-test-bin-day20"}}],"rustflags":[],"metadata":7797948686568424061,"config":2202906307356721367,"compile_kind":0}

day20/target/debug/.fingerprint/day20-e42180e615e523fc/bin-day20

@@ -0,0 +1 @@
+20ff0026cf63a8b5

day20/target/debug/.fingerprint/day20-e42180e615e523fc/bin-day20.json

@@ -0,0 +1 @@
+{"rustc":4443399816165520464,"features":"[]","target":14331336351448024546,"profile":13396965805329499462,"path":1684066648322511884,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug/.fingerprint/day20-e42180e615e523fc/dep-bin-day20"}}],"rustflags":[],"metadata":7797948686568424061,"config":2202906307356721367,"compile_kind":0}

day20/target/debug/.fingerprint/day20-e42180e615e523fc/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

day20/target/debug/day20.d

@@ -0,0 +1 @@
+/Users/shoofle/Projects/aoc_2023/day20/target/debug/day20: /Users/shoofle/Projects/aoc_2023/day20/src/main.rs

day20/target/debug/deps/day20-5957a2c0ba2264ed.d

@@ -0,0 +1,5 @@
+/Users/shoofle/Projects/aoc_2023/day20/target/debug/deps/day20-5957a2c0ba2264ed: src/main.rs
+
+/Users/shoofle/Projects/aoc_2023/day20/target/debug/deps/day20-5957a2c0ba2264ed.d: src/main.rs
+
+src/main.rs: