diff --git a/app/main.py b/app/main.py
index 6d375672..99f0ce0f 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,25 +1,72 @@
+from __future__ import annotations
 from abc import ABC
 
 
 class IntegerRange:
-    pass
+    def __init__(self, min_amount: int, max_amount: int) -> None:
+        self.min_amount = min_amount
+        self.max_amount = max_amount
+
+    def __get__(self, instance: any, owner: any) -> tuple:
+        return self.min_amount, self.max_amount
+
+    def __set__(self, instance: any, value: int) -> None:
+        if not isinstance(value, int):
+            raise TypeError("Only integers are allowed")
+        if value not in range(self.min_amount, self.max_amount + 1):
+            raise ValueError(
+                f"Value must be between "
+                f"{self.min_amount} and {self.max_amount}"
+            )
+        setattr(instance, self.name, value)
+
+    def __set_name__(self, owner: any, name: any) -> None:
+        self.name = f"_{name}"
 
 
 class Visitor:
-   pass
+    def __init__(self,
+                 name: str,
+                 age: int,
+                 weight: int,
+                 height: int) -> None:
+        self.name = name
+        self.age = age
+        self.weight = weight
+        self.height = height
 
 
 class SlideLimitationValidator(ABC):
-    pass
+    def __init__(self,
+                 age: int,
+                 weight: int,
+                 height: int
+                 ) -> None:
+        self.age = age
+        self.weight = weight
+        self.height = height
 
 
 class ChildrenSlideLimitationValidator(SlideLimitationValidator):
-    pass
+    age = IntegerRange(4, 14)
+    weight = IntegerRange(20, 50)
+    height = IntegerRange(80, 120)
 
 
 class AdultSlideLimitationValidator(SlideLimitationValidator):
-    pass
+    age = IntegerRange(14, 60)
+    weight = IntegerRange(50, 120)
+    height = IntegerRange(120, 220)
 
 
 class Slide:
-    pass
+    def __init__(self, name: str, limitation_class: type) -> None:
+        self.name = name
+        self.limitation_class = limitation_class
+
+    def can_access(self, visitor: Visitor) -> bool:
+        try:
+            self.limitation_class(visitor.age, visitor.weight, visitor.height)
+            return True
+        except ValueError:
+            return False