diff --git a/lab-python-flow-control.ipynb b/lab-python-flow-control.ipynb
index f4c7391..0f6191c 100644
--- a/lab-python-flow-control.ipynb
+++ b/lab-python-flow-control.ipynb
@@ -37,6 +37,151 @@
     "\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": 16,
+   "id": "5acf9e38-eda9-438b-8bf6-24cd05fa2ac4",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "['t-shirt', 'mug', 'hat', 'book', 'keychain']"
+      ]
+     },
+     "execution_count": 16,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "products"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "af7df725-a6e8-4f59-804a-13e9b545888d",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "inventory = {}"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 15,
+   "id": "d6de9423-4f1e-4851-b52b-1a47c89a9c4e",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Number of t-shirt: 10\n",
+      "Number of mug: 10\n",
+      "Number of hat: 10\n",
+      "Number of book: 10\n",
+      "Number of keychain: 10\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'t-shirt': 10, 'mug': 10, 'hat': 10, 'book': 10, 'keychain': 10}\n"
+     ]
+    }
+   ],
+   "source": [
+    "for product in products:\n",
+    "    value = int(input(f\"Number of {product}:\"))\n",
+    "    inventory[product] = value\n",
+    "print(inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "id": "c6b18b88-993e-4dca-bd04-61f286859e9d",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "customer_orders = set()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "id": "17daeed1-cbb1-4c5c-b73c-4de77cdce9e2",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdin",
+     "output_type": "stream",
+     "text": [
+      "Enter the name of a product:  MUG\n",
+      "Do you want to continue adding products? yes/no:  yes\n",
+      "Enter the name of a product:  hat\n",
+      "Do you want to continue adding products? yes/no:  Yes\n",
+      "Enter the name of a product:  Book\n",
+      "Do you want to continue adding products? yes/no:  no\n"
+     ]
+    }
+   ],
+   "source": [
+    "continue_adding = \"yes\"\n",
+    "\n",
+    "while continue_adding == \"yes\":\n",
+    "    product = input(\"Enter the name of a product: \") \n",
+    "    product = product.lower()\n",
+    "\n",
+    "    if product in products: \n",
+    "        customer_orders.add(product)\n",
+    "    else:\n",
+    "        print(\"This product is not available\")\n",
+    "\n",
+    "    continue_adding = input(\"Do you want to continue adding products? yes/no: \").lower() "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "id": "3824bc19-90d5-4b0a-82aa-5fa35ccf72ab",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "{'t-shirt': 10, 'mug': 8, 'hat': 8, 'book': 8, 'keychain': 10}\n"
+     ]
+    }
+   ],
+   "source": [
+    "for product in customer_orders: \n",
+    "    inventory[product] = inventory[product]-1\n",
+    "\n",
+    "print(inventory)   "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "d32cf151-848a-4543-a577-0b1a5ac1ea86",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "1846bde0-46f8-4803-98b6-34caeafffd1b",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -55,7 +200,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,