Day 16 part 2.

src/day16.rs

@@ -46,10 +46,54 @@ perfumes: 1";
     sue.0 + 1
 }
 
-// #[aoc(day16, part2)]
-// fn part2(input: &[Ingredient]) -> i32 {
-//    0
-// }
+#[aoc(day16, part2)]
+fn part2(input: &[Sue]) -> usize {
+    let exact = "children: 3
+samoyeds: 2
+akitas: 0
+vizslas: 0
+cars: 2
+perfumes: 1";
+    let exact = foo(exact);
+    let gt = "cats: 7
+trees: 3";
+    let gt = foo(gt);
+    let lt = "pomeranians: 3
+goldfish: 5";
+    let lt = foo(lt);
+
+    let sues: Vec<_> = input.iter()
+        .enumerate()
+        .filter(|(_index, sue)| {
+            exact.iter()
+                .all(|(property, _)| {
+                    !sue.contains_key(property) || exact.get(property) == sue.get(property)
+                })
+                && gt.iter()
+                .all(|(property, _)| {
+                    !sue.contains_key(property) || gt.get(property).unwrap() < sue.get(property).unwrap()
+                })
+                && lt.iter()
+                .all(|(property, _)| {
+                    !sue.contains_key(property) || lt.get(property).unwrap() > sue.get(property).unwrap()
+                })
+        })
+        .collect();
+    dbg!(&sues);
+    sues[0].0 + 1
+}
+
+// 56 wrong
+// 213 too low
+
+fn foo(exact: &str) -> Sue {
+    let exact: Sue = exact.split("\n")
+        .map(|line| {
+            let (name, count) = line.split_once(": ").unwrap();
+            (name.to_string(), count.parse().unwrap())
+        }).collect();
+    exact
+}
 
 type Sue = HashMap<String, u8>;