diff --git a/src/app.py b/src/app.py
index 194b367..79a8aee 100644
--- a/src/app.py
+++ b/src/app.py
@@ -1,11 +1,13 @@
 import sqlite3
 from fastapi import FastAPI
+from fastapi import Request, Form
+from fastapi.responses import HTMLResponse, RedirectResponse
 
 DB_PATH = "./data/database.db"
 
 conn = sqlite3.connect(DB_PATH)
 cursor = conn.cursor()
-cursor.execute("CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, login TEXT NOT NULL UNIQUE, password TEXT NOT NULL)")
+cursor.execute("CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY AUTOINCREMENT, login TEXT NOT NULL UNIQUE, password TEXT NOT NULL)")
 
 app = FastAPI(
     docs_url=None,      # Disable Swagger UI
@@ -14,6 +16,116 @@ app = FastAPI(
 )
 
 
-@app.get("/")
+@app.get("/register", response_class=HTMLResponse)
+async def register_form():
+    return """
+    <html>
+    <head><title>Регистрация</title></head>
+    <body>
+    <h2>Регистрация</h2>
+    <form action="/register" method="post">
+        <input name="login" placeholder="Login" required><br>
+        <input name="password" type="password" placeholder="Password" required><br>
+        <button type="submit">Register</button>
+    </form>
+    <p>Уже есть аккаунт? <a href="/login">Войти</a></p>
+    </body>
+    </html>
+    """
+
+@app.post("/register")
+async def register(login: str = Form(...), password: str = Form(...)):
+    try:
+        cursor.execute("INSERT INTO users (login, password) VALUES (?, ?)", (login, password))
+        conn.commit()
+        response = RedirectResponse(url="/welcome", status_code=302)
+        response.set_cookie("login", login)
+        response.set_cookie("password", password)        
+        return response
+    except sqlite3.IntegrityError:
+        return HTMLResponse("""
+        <html>
+        <head><title>Ошибка регистрации</title></head>
+        <body>
+        <h3>Login уже существует</h3>
+        <a href='/register'>Попробовать снова</a>
+        </body>
+        </html>
+        """, status_code=400)
+
+@app.get("/login", response_class=HTMLResponse)
+async def login_form():
+    return """
+    <html>
+    <head><title>Вход</title></head>
+    <body>
+    <h2>Вход</h2>
+    <form action="/login" method="post">
+        <input name="login" placeholder="Login" required><br>
+        <input name="password" type="password" placeholder="Password" required><br>
+        <button type="submit">Login</button>
+    </form>
+    <p>Нет аккаунта? <a href="/register">Зарегистрироваться</a></p>
+    </body>
+    </html>
+    """
+
+@app.post("/login")
+async def login(login: str = Form(...), password: str = Form(...)):
+    cursor.execute("SELECT * FROM users WHERE login=? AND password=?", (login, password))
+    user = cursor.fetchone()
+    if user:
+        response = RedirectResponse(url="/welcome", status_code=302)
+        response.set_cookie("login", login)
+        response.set_cookie("password", password)
+        return response
+    else:
+        return HTMLResponse("""
+        <html>
+        <head><title>Ошибка входа</title></head>
+        <body>
+        <h3>Неверные учетные данные</h3>
+        <a href='/login'>Попробовать снова</a>
+        </body>
+        </html>
+        """, status_code=401)
+
+@app.get("/welcome", response_class=HTMLResponse)
+async def welcome(request: Request):
+    login = request.cookies.get("login")
+    password = request.cookies.get("password")
+    if not login or not password:
+        return RedirectResponse(url="/login")
+    cursor.execute("SELECT * FROM users WHERE login=? AND password=?", (login, password))
+    user = cursor.fetchone()
+    if user:
+        return f"""
+        <html>
+        <head><title>Добро пожаловать</title></head>
+        <body>
+        <h1>Привет, {login}</h1>
+        <form action="/logout" method="post" onsubmit="return logoutAlert();">
+            <button type="submit">Выйти</button>
+        </form>
+        <script>
+        function logoutAlert() {{
+            alert('Вы вышли из аккаунта');
+            return true;
+        }}
+        </script>
+        </body>
+        </html>
+        """
+    else:
+        return RedirectResponse(url="/login")
+
+@app.post("/logout")
+async def logout():
+    response = RedirectResponse(url="/login", status_code=302)
+    response.delete_cookie("login")
+    response.delete_cookie("password")
+    return response
+
+@app.get("/", include_in_schema=False)
 async def root():
-    return {"message": "Hello World"}
\ No newline at end of file
+    return RedirectResponse(url="/login")
\ No newline at end of file
