diff --git a/src/day09/mod.rs b/src/day09/mod.rs
index 73c3f9e..b65ec61 100644
--- a/src/day09/mod.rs
+++ b/src/day09/mod.rs
@@ -1,38 +1,25 @@
 use crate::common::{convert_num, read_file, split_inputs, split_lines};
 
-pub fn main() {
-    let name = "day09";
-    println!("Executing module '{name}' entrypoint . . . ");
-    
-    let content = read_file(name);
-    let lines = split_lines(&content);
-    let input = split_inputs(lines, &r"\s+");
+pub fn part_two() {
+    unimplemented!();
+}
 
-    let sequences = convert_num(input);
-    let structures: Vec<Vec<Vec<i32>>> = sequences
+pub fn part_one() {
+    let sequences = setup();
+    let predictions: Vec<i32> = sequences
         .iter()
         .map(|s| {
             let current = s.to_vec();
             let mut next = extra_diff(current);
             expand(&mut next);
-            next
-        })
-        .collect();
-    
-    part_one(&structures);
-}
-
-fn part_one(strcts: &Vec<Vec<Vec<i32>>>) {
-    let predictions: Vec<i32> = strcts
-        .iter()
-        .map(|seq|
-            seq
-                .first()
+            next.first()
                 .unwrap()
                 .last()
                 .unwrap()
                 .clone()
-        ).collect();
+        })
+        .collect();
+    
     let sum: i32 = predictions
         .iter()
         .sum();
@@ -99,3 +86,13 @@ fn seq_diff(seq: Vec<i32>) -> Vec<i32> {
 
     diff
 }
+
+fn setup() -> Vec<Vec<i32>> {
+    let name = "day09";
+    println!("Executing module '{name}' entrypoint . . . ");
+    
+    let content = read_file(name);
+    let lines = split_lines(&content);
+    let input = split_inputs(lines, &r"\s+");
+    convert_num(input)
+}
diff --git a/src/main.rs b/src/main.rs
index ba0b22d..ba85fa3 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,5 +3,5 @@ mod day09;
 
 fn main() {
     println!("Executing main entrypoint . . . ");
-    day09::main();
+    day09::part_one();
 }