solution

app/main.py

@@ -1 +1,25 @@
-# write your code here
+class Animal:
+    hidden = False
+    alive = []
+
+    def __init__(self, name: str, health: int = 100) -> None:
+        self.name = name
+        self.health = health
+        Animal.alive.append(self)
+
+    def __repr__(self) -> str:
+        name, health, hidden = self.name, self.health, self.hidden
+        return f"{{Name: {name}, Health: {health}, Hidden: {hidden}}}"
+
+
+class Herbivore(Animal):
+    def hide(self) -> None:
+        self.hidden = not self.hidden
+
+
+class Carnivore(Animal):
+    def bite(self, herbivore: Herbivore) -> None:
+        if not herbivore.hidden and not isinstance(herbivore, Carnivore):
+            herbivore.health -= 50
+            if herbivore.health <= 0:
+                self.alive.remove(herbivore)