diff --git a/level_1/a_user_instance.py b/level_1/a_user_instance.py
index e5d0368..60e5607 100644
--- a/level_1/a_user_instance.py
+++ b/level_1/a_user_instance.py
@@ -12,7 +12,12 @@ def __init__(self, name: str, username: str, age: int, phone: str):
         self.age = age
         self.phone = phone
 
+    def __str__(self):
+        return f"Информация о пользователе: {self.name}, {self.username}, {self.age}, {self.phone}"
 
-if __name__ == '__main__':
-    pass  # код писать тут
 
+if __name__ == "__main__":
+    user1 = User("Зинаида", "zinatut", 23, "+12023456789")
+
+
+print(user1)
diff --git a/level_1/b_student_full_name_method.py b/level_1/b_student_full_name_method.py
index 14ec439..274c9c5 100644
--- a/level_1/b_student_full_name_method.py
+++ b/level_1/b_student_full_name_method.py
@@ -17,6 +17,8 @@ def get_full_name(self):
         return f"Student's full name: {self.surname}, {self.name}"
 
 
-if __name__ == '__main__':
-    pass  # код писать тут
-
+if __name__ == "__main__":
+    student1 = Student("Толя", "Пупкин", "Мичуренец", 123)
+    student1.get_full_name()
+    name = student1.get_full_name()
+    print(name)
diff --git a/level_1/c_product_class.py b/level_1/c_product_class.py
index 3952b66..7fb6bae 100644
--- a/level_1/c_product_class.py
+++ b/level_1/c_product_class.py
@@ -9,8 +9,16 @@
 
 
 class Product:
-    pass  # код писать тут
+    def __init__(self, name: str, description: str, price: float, weight: float):
+        self.name = name
+        self.description = description
+        self.price = price
+        self.weight = weight
 
+    def __str__(self):
+        return f"Информация о продукте: {self.name}, {self.description}, ${self.price}, {self.weight}kg"
 
-if __name__ == '__main__':
-    pass  # код писать тут
+
+if __name__ == "__main__":
+    product1 = Product("Sofa", "Not new but comfortable", 125.7, 65.9)
+    print(product1)
diff --git a/level_1/d_bank_account_increase_balance.py b/level_1/d_bank_account_increase_balance.py
index cc7a16c..eabe359 100644
--- a/level_1/d_bank_account_increase_balance.py
+++ b/level_1/d_bank_account_increase_balance.py
@@ -15,8 +15,11 @@ def __init__(self, owner_full_name: str, balance: float):
         self.balance = balance
 
     def increase_balance(self, income: float):
-        pass  # код писать тут
+        self.balance += income
 
 
-if __name__ == '__main__':
-    pass  # код писать тут
+if __name__ == "__main__":
+    your_account = BankAccount("Zina Netikova", 99.99)
+    print(your_account.balance)
+    your_account.increase_balance(99.99)
+    print(your_account.balance)
diff --git a/level_1/e_bank_account_decrease_balance.py b/level_1/e_bank_account_decrease_balance.py
index dfd4586..104ae7d 100644
--- a/level_1/e_bank_account_decrease_balance.py
+++ b/level_1/e_bank_account_decrease_balance.py
@@ -10,8 +10,22 @@
 
 
 class BankAccount:
-    pass  # код писать тут
+    def __init__(self, owner_full_name: str, balance: float):
+        self.owner_full_name = owner_full_name
+        self.balance = balance
 
+    def increase_balance(self, income: float):
+        self.balance += income
 
-if __name__ == '__main__':
-    pass  # код писать тут
+    def decrease_balance(self, outcome: float):
+        if self.balance > outcome:
+            self.balance -= outcome
+        else:
+            raise ValueError
+
+
+if __name__ == "__main__":
+    your_account = BankAccount("Kolya Pupkin", 29.99)
+    your_account.decrease_balance(9)
+    print(your_account.balance)
+    your_account.decrease_balance(29)