solution

app/main.py

@@ -1,6 +1,22 @@
-from typing import Callable
+from typing import Callable, Any
 
 
 def cache(func: Callable) -> Callable:
-    # Write your code here
-    pass
+    storage = {}
+
+    def wrapper(*args: Any, **kwargs: Any) -> Any:
+        # Формуємо стабільний ключ
+        key = (
+            args, tuple(sorted(kwargs.items()))
+        )
+
+        if key in storage:
+            print("Getting from cache")
+            return storage[key]
+        else:
+            print("Calculating new result")
+            result = func(*args, **kwargs)
+            storage[key] = result
+            return result
+
+    return wrapper