just pushing local changes so can work on elsewhere

puzzle-input/20.txt

@@ -0,0 +1,58 @@
+%pj -> sh
+%mn -> jp
+&hf -> rg, vl, tq, qq, mv, zz
+%xl -> hf
+%sv -> mn, dl
+%kk -> lh
+&sj -> kz
+%jj -> lq, kk
+%mr -> bm, hb
+%sx -> lq, fn
+%fn -> zr, lq
+%pf -> dl, gv
+%lr -> jj, lq
+%jp -> dl, pj
+&hb -> sj, mr, rz, qg, pr
+%vg -> zz, hf
+%pr -> zq
+%hn -> pf
+%jg -> tj
+%qg -> vk
+%dv -> xl, hf
+&qq -> kz
+%fm -> lr
+&ls -> kz
+%pd -> hb, xg
+%rj -> hb
+%fb -> hf, tq
+%zz -> np
+%bm -> pd, hb
+%xn -> lq, fm
+%gv -> jg, dl
+%dz -> sx
+%zs -> dl, nh
+%tj -> zs, dl
+%mv -> vl
+&kz -> rx
+%np -> cl, hf
+&bg -> kz
+%vl -> vg
+%xg -> rz, hb
+%rz -> pr
+%zq -> hb, qg
+%lh -> rd
+%zr -> lq
+%fl -> hb, rj
+%xr -> xn, lq
+%rd -> dz, lq
+%cl -> hf, gj
+%nh -> dl
+%sh -> hn, dl
+%vk -> fx, hb
+%gj -> hf, dv
+%tq -> mv
+&dl -> hn, pj, ls, mn, jg, sv
+%fx -> fl, hb
+&lq -> bg, kk, dz, xr, lh, fm
+%rg -> hf, fb
+broadcaster -> xr, mr, rg, sv

src/solutions/day19.rs

@@ -259,6 +259,15 @@ pub fn puzzle_1(input: &str) -> Result<u32, PuzzleErr> {
     Ok(organize_parts(&parts, &workflows_map))
 }
 
+pub fn puzzle_2(input: &str) -> Result<u32, PuzzleErr> {
+    let (workflows, parts) = parse_input(input)?;
+    let workflows_map = workflows
+        .iter()
+        .map(|w| (w.name.as_str(), w.clone()))
+        .collect::<HashMap<&str, Workflow>>();
+    Ok(organize_parts(&parts, &workflows_map))
+}
+
 pub fn main(data_dir: &str) {
     println!("Day 19: Aplenty");
     let data = load(data_dir, 19, None);
@@ -269,13 +278,13 @@ pub fn main(data_dir: &str) {
         Ok(x) => println!(" Puzzle 1: {}", x),
         Err(e) => panic!("No solution to puzzle 1: {}.", e),
     }
-    // assert_eq!(answer_1, Ok(37113));
+    assert_eq!(answer_1, Ok(509597));
 
     // Puzzle 2.
-    // let answer_2 = puzzle_2(&data);
-    // match answer_2 {
-    //     Ok(x) => println!(" Puzzle 2: {}", x),
-    //     Err(e) => panic!("No solution to puzzle 2: {}", e),
-    // }
+    let answer_2 = puzzle_2(&data);
+    match answer_2 {
+        Ok(x) => println!(" Puzzle 2: {}", x),
+        Err(e) => panic!("No solution to puzzle 2: {}", e),
+    }
     // assert_eq!(answer_2, Ok(30449))
 }

tests/test_day19.rs

@@ -1,4 +1,4 @@
-use aoc_2023::solutions::day19::puzzle_1;
+use aoc_2023::solutions::day19::{puzzle_1, puzzle_2};
 
 const EXAMPLE_INPUT_1: &str = "
 px{a<2006:qkq,m>2090:A,rfg}
@@ -25,3 +25,9 @@ fn puzzle_1_example_1() {
     let _ = env_logger::try_init();
     assert_eq!(puzzle_1(self::EXAMPLE_INPUT_1), Ok(19114));
 }
+
+#[test]
+fn puzzle_2_example_1() {
+    let _ = env_logger::try_init();
+    assert_eq!(puzzle_1(self::EXAMPLE_INPUT_1), Ok(167409079868000));
+}