diff --git a/.vscode/launch.json b/.vscode/launch.json
index f960f47..a4a2d2a 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -6,7 +6,7 @@
             "request": "launch",
             "name": "Launch",
             "program": "${workspaceFolder}/build/adventofcode/adventofcode",
-            "args": ["2024", "1", "2"],
+            "args": ["2024", "2", "1"],
             "cwd": "${workspaceFolder}",
             "preLaunchTask": "CMake: build",
         }
diff --git a/2024/CMakeLists.txt b/2024/CMakeLists.txt
index e28b2f6..b48df57 100644
--- a/2024/CMakeLists.txt
+++ b/2024/CMakeLists.txt
@@ -1,6 +1,6 @@
 add_library(2024 SHARED)
 
-foreach(i RANGE 1 1)
+foreach(i RANGE 1 2)
     set(out_path "${CMAKE_CURRENT_SOURCE_DIR}/src/include/day${i}_input.h")
     add_custom_command(
         OUTPUT "${CMAKE_CURRENT_SOURCE_DIR}/src/include/day${i}_input.h"
@@ -17,4 +17,5 @@ target_link_libraries(2024 m)
 target_sources(2024
     PRIVATE 
     src/day1.c
+    src/day2.c
 )
\ No newline at end of file
diff --git a/2024/src/day1.c b/2024/src/day1.c
index 02e209b..11767ad 100644
--- a/2024/src/day1.c
+++ b/2024/src/day1.c
@@ -1,4 +1,4 @@
-#include "include/days.h"
+#include "include/day1_input.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <inttypes.h>
@@ -12,7 +12,7 @@ struct list_pair {
     struct list_ctx *right;
 };
 
-struct list_pair *parse_input() {
+struct list_pair *parse_input_day1() {
     struct list_pair *ctx = malloc(sizeof(struct list_pair));
     ctx->left = malloc(sizeof(struct list_ctx));
     ctx->left->list = malloc(1000 * sizeof(u_int32_t));
@@ -31,6 +31,7 @@ struct list_pair *parse_input() {
                 if (list_buf_len) {
                     ctx->left->list[list_i] = strtoul(list_buf, NULL, 10);
                     list_buf_len = 0;
+                    free(list_buf);
                     list_buf = NULL;
                 };
                 break;
@@ -38,6 +39,7 @@ struct list_pair *parse_input() {
                 ctx->right->list[list_i] = strtoul(list_buf, NULL, 10);
                 list_i++;
                 list_buf_len = 0;
+                free(list_buf);
                 list_buf = NULL;
                 break;
             }
@@ -68,7 +70,7 @@ void selection_sort(struct list_ctx *ctx) {
 } 
 
 char *day_1_part_1() {
-    struct list_pair *pair = parse_input();
+    struct list_pair *pair = parse_input_day1();
 
     selection_sort(pair->left);
     selection_sort(pair->right);
@@ -91,7 +93,7 @@ char *day_1_part_1() {
 }
 
 char *day_1_part_2() {
-    struct list_pair *pair = parse_input();
+    struct list_pair *pair = parse_input_day1();
     int total = 0;
 
     // TODO: do not the O(n^2)
diff --git a/2024/src/include/days.h b/2024/src/include/days.h
deleted file mode 100644
index 789e944..0000000
--- a/2024/src/include/days.h
+++ /dev/null
@@ -1,3 +0,0 @@
-#include "day1_input.h"
-
-char *day_1_part_1(void);
\ No newline at end of file