diff --git a/2024/bb.edn b/2024/bb.edn
index df4e00a..d4ffb12 100644
--- a/2024/bb.edn
+++ b/2024/bb.edn
@@ -1,4 +1,4 @@
 {:deps {org.clojure/clojure {:mvn/version "1.12.0"}
         org.clojure/math.combinatorics {:mvn/version "0.3.0"}}
- :paths ["src"]
+ :paths ["src" "../shared/clj/src"]
  :tasks {}}
diff --git a/2024/project.clj b/2024/project.clj
index 5257360..5c06eb2 100644
--- a/2024/project.clj
+++ b/2024/project.clj
@@ -2,7 +2,9 @@
   :description "my 2024 advent of code solutions in clojure"
   :url "http://github.com/ajetski/advent-of-code"
   :min-lein-version "2.0.0"
+  :jvm-opts ["-Xmx16g"]
   :dependencies [[org.clojure/clojure "1.12.0"]
                  [org.clojure/math.combinatorics "0.3.0"]
                  [babashka/fs "0.5.23"]
-                 [org.babashka/http-client "0.4.22"]])
+                 [org.babashka/http-client "0.4.22"]]
+  :source-paths ["src" "../shared/clj/src"])
diff --git a/2024/src/core.clj b/2024/src/core.clj
deleted file mode 100644
index a070d86..0000000
--- a/2024/src/core.clj
+++ /dev/null
@@ -1,117 +0,0 @@
-(ns core
-  (:require
-   [clojure.string :as str]))
-
-
-;; string/regex stuff
-
-(defn split-whitespace [s]
-  (str/split s #"\s+"))
-
-(defn split-on-double-newlines [s]
-  (str/split s #"\n\n"))
-
-(defn get-match-groups [regex s]
-  (->> s (re-seq regex) (map rest)))
-
-(defn re-pos [re s]
-  (loop [m (re-matcher re s)
-         res {}]
-    (if (.find m)
-      (recur m (assoc res (.start m) (.group m)))
-      res)))
-
-;; general utils
-
-(defn dbg [x]
-  (println x)
-  x)
-
-(defn log [msg]
-  (spit "logs.txt" msg :append true))
-
-(defn compose [& fs]
-  (apply comp (reverse fs)))
-
-(defn bool->binary [condition]
-  (if condition 1 0))
-
-;; alter collections
-
-(defn get-coords [list-of-lists]
-  (for [row (range (count list-of-lists))
-        col (range (count (get list-of-lists row)))]
-    [row col]))
-
-(defn map-by-coords [arr-2d]
-  (->> arr-2d
-       get-coords
-       (map (juxt identity #(get (get arr-2d (first %)) (second %))))
-       (into {})))
-
-(defn insert-at-idx [coll idx el]
-  (concat (take idx coll)
-          (list el)
-          (drop idx coll)))
-
-(defn mmap
-  "map map f coll"
-  [f & colls]
-  (apply map (partial map f) colls))
-
-(defn mmapv
-  "mapv mapv f coll"
-  [f & colls]
-  (apply mapv (partial mapv f) colls))
-
-(defn mmmap
-  "map map map f coll"
-  [f & colls]
-  (apply map (partial map (partial map f)) colls))
-
-(defn mmmapv
-  "mapv mapv mapv f coll"
-  [f & colls]
-  (apply mapv (partial mapv (partial mapv f)) colls))
-
-(defn partition-by-counts [counts coll]
-  (->> counts
-       (reduce (fn [[acc coll] c]
-                 (let [[a b] (split-at c coll)]
-                   [(conj acc a) b]))
-               [[] coll])
-       first))
-
-(defn update-last [v f & args]
-  (let [idx (dec (count v))]
-    (apply update v idx f args)))
-
-(defn partition-by-range-gap [sorted-nums]
-  (:acc (reduce (fn [{acc :acc
-                      a :last}
-                     el]
-                  (if (= el (inc a))
-                    {:acc (update-last acc conj el)
-                     :last el}
-                    {:acc (conj acc [el])
-                     :last el}))
-                {:acc [[(first sorted-nums)]]
-                 :last (first sorted-nums)}
-                (rest sorted-nums))))
-
-
-;; Math things
-
-(defn square [n] (* n n))
-(defn mean [a] (/ (reduce + a) (count a)))
-(defn standard-deviation
-  [a]
-  (let [mn (mean a)]
-    (Math/sqrt
-      (/ (reduce #(+ %1 (square (- %2 mn))) 0 a)
-        (dec (count a))))))
-
-(def arrow-char->dir {\> :right
-                \v :down
-                \< :left
-                \^ :up})
diff --git a/2024/src/day25.clj b/2024/src/day25.clj
new file mode 100644
index 0000000..fbd1e21
--- /dev/null
+++ b/2024/src/day25.clj
@@ -0,0 +1,33 @@
+(ns day25
+  (:require
+   [clojure.string :as s]
+   [core :refer :all :as c]
+   [input-manager :refer :all]))
+
+(def input (->> (split-on-double-newlines (get-input-raw 2024 25))
+                (map s/split-lines)))
+
+(defn get-counts [str-rows]
+  (->> (apply map vector str-rows) ;; flip grid over y=x axis
+       (map (partial filter #(= \# %)))
+       (map count)))
+
+(def key-counts (->> input
+                     (filter #(every? (partial = \.) (first %)))
+                     (map get-counts)))
+
+(def lock-counts (->> input
+                      (filter #(every? (partial = \#) (first %)))
+                      (map get-counts)))
+
+(def space (count (first input)))
+
+;; part 1
+(->> (for [k key-counts
+           l lock-counts]
+       (map + k l))
+     (filter (partial every? #(<= % space)))
+     count)
+
+;; classic, no part 2. just get the rest of the stars!
+
diff --git a/2024/src/input_manager.clj b/2024/src/input_manager.clj
deleted file mode 100644
index ce246dc..0000000
--- a/2024/src/input_manager.clj
+++ /dev/null
@@ -1,25 +0,0 @@
-(ns input-manager
-  (:require
-   [babashka.fs :as fs]
-   [babashka.http-client :as http]
-   [clojure.string :as str]))
-
-(def session (first (fs/read-all-lines "input/.session")))
-
-(defn input-file-loc [day]
-  (str "input/" day ".txt"))
-
-(defn download-input [day]
-  (->> {:headers {:cookie (str "session=" session)}}
-       (http/get (str "https://adventofcode.com/2024/day/" day "/input"))
-       :body
-       (str/split-lines)
-       (fs/write-lines (input-file-loc day))))
-
-(defn get-input [day]
-  (try
-    (fs/read-all-lines (input-file-loc day))
-    (catch java.nio.file.NoSuchFileException _e
-      (download-input day)
-      (get-input day))))
-