diff --git a/HW11/README.md b/HW11/README.md
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+# Install requirements
+
+```shell
+pip install -r requirements.txt
+```
+
+# Run app
+
+```shell
+python app.py
+```
diff --git a/HW11/app.py b/HW11/app.py
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+from flask import Flask, render_template, request, redirect
+import sqlite3
+
+app = Flask(__name__)
+
+class Person:
+    def __init__(self, name, byear):
+        self.name = name
+        self.byear = byear
+        
+
+class RoomType:
+    def __init__(self, id, name, rate):
+        self.id = id
+        self.name = name
+        self.rate = rate
+
+
+
+class Guest(Person):
+    def __init__(self, name, byear, room_type_id, nights):
+        super().__init__(name, byear)
+        self.room_type_id = room_type_id
+        self.nights = nights
+
+    def calculate_total(self, rate):
+        return self.nights * rate
+
+
+room_types = [
+    ('Одномісний', 500),
+    ('Двомісний', 800),
+    ('Люкс', 1500)
+] 
+
+
+def init_db():
+    with sqlite3.connect('database.db') as conn:
+        c = conn.cursor()
+        c.execute('''
+            CREATE TABLE IF NOT EXISTS room_types (
+                id INTEGER PRIMARY KEY,
+                name TEXT,
+                rate REAL
+            )
+        ''')
+        c.execute('''
+            CREATE TABLE IF NOT EXISTS guests (
+                id INTEGER PRIMARY KEY AUTOINCREMENT,
+                name TEXT,
+                byear TEXT,
+                room_type_id INTEGER,
+                nights INTEGER,
+                FOREIGN KEY(room_type_id) REFERENCES room_types(id)
+            )
+        ''')
+        c.execute('SELECT COUNT(*) FROM room_types')
+        if c.fetchone()[0] == 0:
+            c.executemany('INSERT INTO room_types (name, rate) VALUES (?, ?)', room_types)
+        conn.commit()
+
+
+@app.route('/')
+def home():
+    return render_template('home.html')
+
+
+@app.route('/register', methods=['GET', 'POST'])
+def register():
+    conn = sqlite3.connect('database.db')
+    c = conn.cursor()
+    c.execute('SELECT * FROM room_types')
+    rooms = c.fetchall()
+    
+    if request.method == 'POST':
+        name = request.form['name']
+        byear = request.form['byear']
+        room_type_id = int(request.form['room_type_id'])
+        nights = int(request.form['nights'])
+
+        guest = Guest(name, byear, room_type_id, nights)
+
+        c.execute('INSERT INTO guests (name, byear, room_type_id, nights) VALUES (?, ?, ?, ?)',
+                  (guest.name, guest.byear, guest.room_type_id, guest.nights))
+        conn.commit()
+        return redirect('/guests')
+    
+    return render_template('register.html', rooms=rooms)
+
+
+@app.route('/guests')
+def guests():
+    conn = sqlite3.connect('database.db')
+    c = conn.cursor()
+    c.execute('''
+        SELECT g.name, g.byear, r.name, r.rate, g.nights 
+        FROM guests g
+        JOIN room_types r ON g.room_type_id = r.id
+    ''')
+    data = c.fetchall()
+    guests = []
+    for name, byear, room_name, rate, nights in data:
+        person = Guest(name, byear, None, nights)
+        guests.append({
+            'name': name,
+            'byear': byear,
+            'room': room_name,
+            'rate': rate,
+            'nights': nights,
+            'total': person.calculate_total(rate)
+        })
+    return render_template('guests.html', guests=guests)
+
+
+if __name__ == '__main__':
+    init_db()
+    app.run(port=8000)
+
diff --git a/HW11/database.db b/HW11/database.db
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Binary files /dev/null and b/HW11/database.db differ
diff --git a/HW11/requirements.txt b/HW11/requirements.txt
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+++ b/HW11/requirements.txt
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+blinker==1.9.0
+click==8.2.0
+Flask==3.1.1
+itsdangerous==2.2.0
+Jinja2==3.1.6
+MarkupSafe==3.0.2
+Werkzeug==3.1.3
diff --git a/HW11/templates/guests.html b/HW11/templates/guests.html
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+++ b/HW11/templates/guests.html
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+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Список гостей</title>
+</head>
+<body>
+    <h1>Список гостей</h1>
+    <table border="1">
+        <tr>
+            <th>Прізвище</th>
+            <th>Рік нар.</th>
+            <th>Тип номера</th>
+            <th>Діб</th>
+            <th>Ціна за добу</th>
+            <th>Загальна плата</th>
+        </tr>
+        {% for guest in guests %}
+        <tr>
+            <td>{{ guest.name }}</td>
+            <td>{{ guest.byear }}</td>
+            <td>{{ guest.room }}</td>
+            <td>{{ guest.nights }}</td>
+            <td>{{ guest.rate }} грн</td>
+            <td>{{ guest.total }} грн</td>
+        </tr>
+        {% endfor %}
+    </table>
+</body>
+</html>
+
diff --git a/HW11/templates/home.html b/HW11/templates/home.html
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+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
+        <title>Готель</title>
+    </head>
+    <body>
+        <h1>Готель</h1>
+        <nav>
+            <li><a href="/guests">Список гостей</a></li>
+            <li><a href="/register">Зареєструвати гостя</a></li>
+        </nav> 
+    </body>
+</html>
diff --git a/HW11/templates/register.html b/HW11/templates/register.html
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+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Реєстрація гостя</title>
+</head>
+<body>
+    <h1>Реєстрація гостя</h1>
+    <form method="POST">
+        <label>Прізвище:</label><br>
+        <input type="text" name="name" required><br>
+        <label>Рік народження:</label><br>
+        <input type="text" name="byear" required><br>
+        <label>Тип номера:</label><br>
+        <select name="room_type_id">
+            {% for room in rooms %}
+                <option value="{{ room[0] }}">{{ room[1] }} ({{ room[2] }} грн/доба)</option>
+            {% endfor %}
+        </select><br>
+        <label>Кількість діб:</label><br>
+        <input type="number" name="nights" min="1" required><br><br>
+        <input type="submit" value="Зареєструвати">
+    </form>
+</body>
+</html>
+