diff --git a/lab-python-flow-control.ipynb b/lab-python-flow-control.ipynb
index f4c7391..13e6347 100644
--- a/lab-python-flow-control.ipynb
+++ b/lab-python-flow-control.ipynb
@@ -37,6 +37,216 @@
     "\n",
     "3. Instead of updating the inventory by subtracting 1 from the quantity of each product, only do it for  the products that were ordered (those in \"customer_orders\")."
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 25,
+   "id": "a84764ee-e642-47e7-87a7-80d2d4232123",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "f47ea14b-5643-4ee3-a079-c4a17e47f1e9",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "inventory = {}"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 34,
+   "id": "cf86bac3-f3ec-4fbc-a7c7-7ee05599ab85",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please enter the number of t-shirt 1\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The number of t-shirt is 1\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please enter the number of mug 2\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The number of mug is 2\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please enter the number of hat 3\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The number of hat is 3\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please enter the number of book 4\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The number of book is 4\n"
+     ]
+    },
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please enter the number of keychain 5\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The number of keychain is 5\n"
+     ]
+    }
+   ],
+   "source": [
+    "for product_type in products:\n",
+    "    inventory[product_type] = int(input(f\"Please enter the number of {product_type}\"))\n",
+    "    print(f\"The number of {product_type} is {inventory[product_type]}\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 29,
+   "id": "6b0c9453-b9bc-4980-b65a-dc32a0b7301c",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "customer_orders = set({})"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 32,
+   "id": "5401d134-a033-4272-a546-23386f46f7e0",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'mug', 'book', 't-shirt'}\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(customer_orders)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 31,
+   "id": "0c164d1e-b070-4b1b-b084-3b318e0d2424",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Please enter the product ordered: mug\n",
+      "Do you want to add another product? Enter Yes or No Yes\n",
+      "Please enter the product ordered: t-shirt\n",
+      "Do you want to add another product? Enter Yes or No Yes\n",
+      "Please enter the product ordered: tt-shirt\n",
+      "Please enter the product ordered (among the existing products types): book\n",
+      "Do you want to add another product? Enter Yes or No No\n"
+     ]
+    }
+   ],
+   "source": [
+    "count = 0\n",
+    "customer_order_type = input('Please enter the product ordered:')\n",
+    "if customer_order_type in products:\n",
+    "    customer_orders.add(customer_order_type)\n",
+    "elif customer_order_type not in products:\n",
+    "    customer_order_type = input('Please enter the product ordered (among the existing products types):')\n",
+    "customer_order_type_question = input('Do you want to add another product? Enter Yes or No')\n",
+    "if customer_order_type_question != 'Yes' and customer_order_type_question != 'No':\n",
+    "    customer_order_type_question = input('The input is wrong, please try again and answer only with Yes or No the following question: Do you want to add another product?')\n",
+    "while customer_order_type_question == 'Yes':\n",
+    "    customer_order_type_another = input('Please enter the product ordered:')\n",
+    "    if customer_order_type_another in products:\n",
+    "        customer_orders.add(customer_order_type_another)\n",
+    "    elif customer_order_type_another not in products:\n",
+    "        customer_order_type_another = input('Please enter the product ordered (among the existing products types):')\n",
+    "    customer_orders.add(customer_order_type_another)\n",
+    "    customer_order_type_question = input('Do you want to add another product? Enter Yes or No')"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 35,
+   "id": "00ed9e07-ac40-4feb-991b-e60a18afd1c0",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'t-shirt': 1, 'mug': 2, 'hat': 3, 'book': 4, 'keychain': 5}\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 36,
+   "id": "4d0c771d-476d-46e8-a3b8-7b695971bdc2",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'t-shirt': 0, 'mug': 1, 'hat': 3, 'book': 3, 'keychain': 5}\n"
+     ]
+    }
+   ],
+   "source": [
+    "for customer_order in customer_orders:\n",
+    "    if customer_order in products:\n",
+    "        inventory[customer_order] -= 1\n",
+    "print(inventory)"
+   ]
   }
  ],
  "metadata": {
@@ -55,7 +265,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,