diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..24ee5b1
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.13
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..184c4eb
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,11 @@
+{
+    "python.testing.unittestArgs": [
+        "-v",
+        "-s",
+        ".",
+        "-p",
+        "test_*.py"
+    ],
+    "python.testing.pytestEnabled": false,
+    "python.testing.unittestEnabled": true
+}
\ No newline at end of file
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..146ebc6
--- /dev/null
+++ b/main.py
@@ -0,0 +1,6 @@
+def main():
+    print("Hello from sort-quest!")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..af6f9c1
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,9 @@
+[project]
+name = "sort-quest"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.13"
+dependencies = [
+    "colorful-test>=1.0.2",
+]
diff --git a/sort.py b/sort.py
index 402e60c..bab38f6 100644
--- a/sort.py
+++ b/sort.py
@@ -12,17 +12,27 @@ class Sorter:
 
     @staticmethod
     def merge(data: List[Any], comparator: Callable[[Any, Any], bool]) -> List[Any]:
-        """
-        Sorts the list using the merge sort algorithm.
         
-        Args:
-            data (List[Any]): The list to sort.
-            comparator (Callable[[Any, Any], bool]): Comparison function.
-            
-        Returns:
-            List[Any]: A new sorted list.
-        """
-        pass
+        
+        if len(data) <= 1:
+            return data
+        
+        mid = len(data) // 2
+        left = Sorter.merge(data[:mid], comparator)
+        right = Sorter.merge(data[mid:], comparator)
+        merged = []
+        i = 0
+        j = 0
+        while i < len(left) and j < len(right):
+            if comparator(left[i], right[j]):
+                merged.append(left[i])
+                i += 1
+            else:
+                merged.append(right[j])
+                j += 1
+        merged.extend(left[i:])
+        merged.extend(right[j:])
+        return merged
 
     @staticmethod
     def insertion(data: List[Any], comparator: Callable[[Any, Any], bool]) -> List[Any]:
diff --git a/uv.lock b/uv.lock
new file mode 100644
index 0000000..8ce8a3b
--- /dev/null
+++ b/uv.lock
@@ -0,0 +1,23 @@
+version = 1
+revision = 3
+requires-python = ">=3.13"
+
+[[package]]
+name = "colorful-test"
+version = "1.0.2"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/be/95/a4b7f6afb80c756f57abfa980b539bc117ba341e9ccdae6550109b56af7e/colorful_test-1.0.2.tar.gz", hash = "sha256:0f9a13fd92f1bc2eb35099b35a25970afb4cb230f15d9071485ff6bc6e6cf739", size = 15358, upload-time = "2025-02-07T15:27:54.376Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/6d/6f/596dfc5c26f744def6b6d5882cd0aa766ab6822d90c20fbe00a59b487f07/colorful_test-1.0.2-py3-none-any.whl", hash = "sha256:8037811ccdcf2d91724d691dbe430559aa1e92f5d8b702ce8d76a741051464e7", size = 14842, upload-time = "2025-02-07T15:27:52.098Z" },
+]
+
+[[package]]
+name = "sort-quest"
+version = "0.1.0"
+source = { virtual = "." }
+dependencies = [
+    { name = "colorful-test" },
+]
+
+[package.metadata]
+requires-dist = [{ name = "colorful-test", specifier = ">=1.0.2" }]