diff --git a/app/main.py b/app/main.py
index 8fbf3053..7e4c1607 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1 +1,51 @@
-#  write your code here
+class Animal:
+    def __init__(self, name: str,
+                 appetite: int,
+                 is_hungry: bool = True) -> None:
+        self.name = name
+        self.appetite = appetite
+        self.is_hungry = is_hungry
+
+    def print_name(self) -> str:
+        return f"Hello, I'm {self.name}"
+
+    def feed(self) -> int:
+        if self.is_hungry:
+            print(f"Eating {self.appetite} food points...")
+            self.is_hungry = False
+            return self.appetite
+        else:
+            return 0
+
+
+class Cat(Animal):
+    def __init__(self, name: str, appetite: int = 3, is_hungry: bool = True) -> None:
+        super().__init__(name, appetite, is_hungry)
+        self.appetite = appetite
+        self.is_hungry = is_hungry
+
+    def catch_mouse(self) -> None:
+        print("The hunt began!")
+
+
+class Dog(Animal):
+    def __init__(self, name: str, appetite: int = 7, is_hungry: bool = True) -> None:
+        super().__init__(name, appetite, is_hungry)
+        self.appetite = appetite
+        self.is_hungry = is_hungry
+
+    def bring_slippers(self) -> None:
+        print("The slippers delivered!")
+
+
+def feed_animals(animals: list) -> int:
+    feed_num = []
+    for animal in animals:
+        feed_num.append(animal.feed())
+    return sum(feed_num)
+
+cat = Cat("Cat", False)
+lion = Animal("Lion", 25, True)
+dog = Dog("Dog")
+
+print(feed_animals([cat, lion, dog]))
\ No newline at end of file