diff --git a/app/main.py b/app/main.py
index 68287892f..970d9e1ac 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,6 +1,29 @@
-from typing import Callable
+from typing import Callable, Any
+from functools import wraps
 
 
 def cache(func: Callable) -> Callable:
-    # Write your code here
-    pass
+    results_dict = {}
+
+    @wraps(func)
+    def wrapper(*args) -> Any:
+        key = args
+        if key not in results_dict:
+            results_dict[key] = func(*args)
+            print("Calculating new result")
+        else:
+            print("Getting from cache")
+        return results_dict[key]
+
+    return wrapper
+
+
+@cache
+def long_time_func(num1: int, num2: int, num3: int) -> int:
+    result = (num1 ** num2 ** num3) % (num1 * num3)
+    return result
+
+
+@cache
+def long_time_func_2(n_tuple: tuple, power: int) -> int:
+    return [number ** power for number in n_tuple]