diff --git a/app/main.py b/app/main.py
index b2d096bd..4bc6ea83 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,8 +1,45 @@
 class Car:
-    # write your code here
-    pass
+    def __init__(self,
+                 comfort_class: int,
+                 clean_mark: int,
+                 brand: str
+                 ) -> None:
+        self.comfort_class = comfort_class
+        self.clean_mark = clean_mark
+        self.brand = brand
 
 
 class CarWashStation:
-    # write your code here
-    pass
+    def __init__(self,
+                 distance_from_city_center: float,
+                 clean_power: int,
+                 average_rating: float,
+                 count_of_ratings: int
+                 ) -> None:
+        self.distance_from_city_center = distance_from_city_center
+        self.clean_power = clean_power
+        self.average_rating = average_rating
+        self.count_of_ratings = count_of_ratings
+
+    def serve_cars(self, list_of_cars: list[Car]) -> float:
+        income = 0
+        for car in list_of_cars:
+            if car.clean_mark < self.clean_power:
+                income += self.calculate_washing_price(car)
+                self.wash_single_car(car)
+        return income
+
+    def calculate_washing_price(self, car: Car) -> float:
+        return round(
+            car.comfort_class * (self.clean_power - car.clean_mark)
+            * self.average_rating / self.distance_from_city_center, 1)
+
+    def wash_single_car(self, car: Car) -> None:
+        if self.clean_power > car.clean_mark:
+            car.clean_mark = self.clean_power
+
+    def rate_service(self, rate: int) -> None:
+        new_rate = ((self.average_rating * self.count_of_ratings)
+                    + rate) / (self.count_of_ratings + 1)
+        self.average_rating = round(new_rate, 1)
+        self.count_of_ratings += 1