diff --git a/2024/src/core.clj b/2024/src/core.clj
index 06fa48f..6a13f39 100644
--- a/2024/src/core.clj
+++ b/2024/src/core.clj
@@ -1,25 +1,4 @@
-(ns core
-  (: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))))
+(ns core)
 
+(defn compose [& fs]
+  (apply comp (reverse fs)))
diff --git a/2024/src/day01.clj b/2024/src/day01.clj
index 21ffc6b..cb22db1 100644
--- a/2024/src/day01.clj
+++ b/2024/src/day01.clj
@@ -1,11 +1,12 @@
 (ns day01
   (:require
-   [core :refer [get-input]]))
+   [input-manager :refer [get-input]]
+   [core :refer :all]))
 
 (def input (->> (get-input 1)
-                (map #(re-seq #"(\d+)\s+(\d+)" %))
-                (map (comp rest first))
-                (map (partial mapv parse-long))
+                (map (compose #(re-seq #"(\d+)\s+(\d+)" %)
+                              first rest ; only get match groups
+                              #(mapv parse-long %)))
                 (into {})
                 ((juxt keys vals))))
 
diff --git a/2024/src/input_manager.clj b/2024/src/input_manager.clj
new file mode 100644
index 0000000..ce246dc
--- /dev/null
+++ b/2024/src/input_manager.clj
@@ -0,0 +1,25 @@
+(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))))
+