diff --git a/lab-python-flow-control.ipynb b/lab-python-flow-control.ipynb
index f4c7391..e395f5b 100644
--- a/lab-python-flow-control.ipynb
+++ b/lab-python-flow-control.ipynb
@@ -12,7 +12,7 @@
   },
   {
    "cell_type": "markdown",
-   "id": "3851fcd1-cf98-4653-9c89-e003b7ec9400",
+   "id": "1ada065a",
    "metadata": {},
    "source": [
     "## Exercise: Managing Customer Orders Optimized\n",
@@ -37,6 +37,89 @@
     "\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": "markdown",
+   "id": "1cb4fe5d",
+   "metadata": {},
+   "source": [
+    "Exercise 1:"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "ce12ed23",
+   "metadata": {},
+   "source": [
+    "products = [\"t-shirt\", \"shoes\", \"gloves\", \"sueters\", \"jeans\"]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "883b656f",
+   "metadata": {
+    "vscode": {
+     "languageId": "plaintext"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "inventory = {\n",
+    "\"t-shirt\" : 10, \n",
+    "\"shoes\" : 15,\n",
+    "\"gloves\" : 10,\n",
+    "\"sueters\" : 12,\n",
+    "\"jeans\" : 18\n",
+    "}\n",
+    "\n",
+    "customers_orders = set()"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "4421e52d",
+   "metadata": {},
+   "source": [
+    "Exercise 2:"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "e8e5e327",
+   "metadata": {},
+   "source": [
+    "while True: \n",
+    "    product = input(\"Introduce the product that wants to order: \")\n",
+    "if product in products: \n",
+    "    customers_orders.add(product)\n",
+    "    print(f\"{product} add to your order\")\n",
+    "\n",
+    "else \n",
+    "    print(\"This product does not exist\")\n",
+    "\n",
+    "another = input(\"Do you want to add a new product? (yes/no): \").lower ()\n",
+    "\n",
+    "if another == \"no\":\n",
+    "false"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "7560eed8",
+   "metadata": {},
+   "source": [
+    "Exercise 3:"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "e32596d9",
+   "metadata": {},
+   "source": [
+    "for product in customers_orders:\n",
+    "    inventory [product] -=1"
+   ]
   }
  ],
  "metadata": {