day23 part1

1 files changed, 57 insertions, 0 deletions

diff --git a/2024/day23.rs b/2024/day23.rs
new file mode 100644
index 0000000..65ed1a0
--- /dev/null
+++ b/2024/day23.rs
@@ -0,0 +1,57 @@
+#![allow(dead_code)]
+#![allow(unused_variables)]
+#![allow(unused_mut)]
+use std::collections::HashMap;
+use std::collections::HashSet;
+use std::env;
+use std::fs::File;
+use std::io::Read;
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    let filename = if args.len() == 1 {
+        "in/".to_owned() + args[0].split('/').last().unwrap() + ".pzl"
+    } else {
+        args[1].clone()
+    };
+    let mut f = File::open(filename).expect("cannot open file");
+    let mut content = String::new();
+    f.read_to_string(&mut content).expect("cannot read file");
+    let lines = content.trim_end().split("\n");
+
+    let mut nodes: HashMap<&str, HashSet<&str>> = HashMap::new();
+    let mut conns: HashSet<(&str, &str)> = HashSet::new();
+    for line in lines {
+        let (a, b) = line.split_once("-").unwrap();
+        nodes.entry(a).or_default().insert(b);
+        nodes.entry(b).or_default().insert(a);
+        conns.insert((a, b));
+    }
+    println!("{:?}", nodes);
+
+    let mut triplets: HashSet<Vec<&str>> = HashSet::new();
+    for n0 in nodes.keys() {
+        if n0.starts_with("t") {
+            for n1 in &nodes[n0] {
+                for n2 in &nodes[n1] {
+                    for n3 in &nodes[n2] {
+                        if n0 == n3 {
+                            let mut v = [*n0, *n1, *n2].to_vec();
+                            v.sort();
+                            println!("{:?}", v);
+                            triplets.insert(v);
+                        }
+                    }
+                }
+            }
+        }
+    }
+    let res1 = triplets.len();
+
+    let mut res2 = 0;
+
+    println!("res1: {}", res1);
+    println!("res2: {}", res2);
+    //assert_eq!(res1, );
+    //assert_eq!(res2, );
+}