Solution

app/main.py

@@ -1,6 +1,19 @@
 from typing import Callable
+from functools import wraps
 
 
 def cache(func: Callable) -> Callable:
-    # Write your code here
-    pass
+
+    results = dict({})
+
+    @wraps(func)
+    def wrapper(*args) -> callable:
+        if args in results:
+            print("Getting from cache")
+            return results[args]
+        else:
+            print("Calculating new result")
+            result = func(*args)
+            results[args] = result
+            return result
+    return wrapper