diff --git a/src/Login.java b/src/Login.java
deleted file mode 100644
index 9e9b785..0000000
--- a/src/Login.java
+++ /dev/null
@@ -1,133 +0,0 @@
-import java.io.*;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Scanner;
-
-public class Login {
-	private static final String USER_FILE = "users.txt";
-    private static List<User> users = new ArrayList<>();
-    public void Main() {    	
-    	load();
-        Scanner scanner = new Scanner(System.in);        
-        while (true) {
-            System.out.println("\n---------登录系统---------");
-            System.out.println("请输入用户名和密码（用空格隔开）: ");
-            String input = scanner.nextLine().trim(); 
-            if (input.equalsIgnoreCase("q")) {
-                System.out.println("已退出！");
-                break;
-            } 
-            String[] NandP = input.split(" "); 
-            if (NandP.length != 2) {
-                System.out.println("请输入正确的用户名、密码");
-                continue;
-            }
-            String username = NandP[0];
-            String password = NandP[1];
-            User user = Prove(username, password);
-            if (user != null) {
-                Success(user, scanner);
-            } else {
-                System.out.println("请输入正确的用户名、密码");
-            }
-        }
-        scanner.close();
-    }
-      
-    private static void load() {
-        users.clear();
-        try (BufferedReader reader = new BufferedReader(new FileReader(USER_FILE))) {
-            String line;
-            while ((line = reader.readLine()) != null) {
-                line = line.trim();
-                if (!line.isEmpty()) {
-                    String[] parts = line.split(" ");
-                    if (parts.length == 3) {
-                        users.add(new User(parts[0], parts[1], parts[2]));
-                    }
-                }
-            }
-            reader.close();
-            System.out.println("Loading...");
-        } catch (IOException e) {
-            System.out.println("出错！" + e.getMessage());
-        }
-    }
-    
-    private static User Prove(String username, String password) {
-        for (User user : users) {
-            if (user.getUsername().equals(username) && user.getPassword().equals(password)) {
-                return user;
-            }
-        }
-        return null;
-    }
-    
-    private static void Success(User user, Scanner scanner) {
-    	String role = getRole(user.getRole());
-        System.out.println("登录成功！\n" + user.getUsername() + " [" + role + "]");
-        QuestionManager questionManager = new QuestionManager(user.getUsername(), user.getRole());
-        while (true) {
-            System.out.println("准备生成[" + questionManager.getCurrentRoleChinese() + "]数学题目，请输入生成题目数量（10~30）：");
-            System.out.println("输入 -1 退出登录，输入 q 退出程序，输入\"切换为XX\"切换难度（XX为小学、初中、高中）");
-            String input = scanner.nextLine().trim();
-            if (input.equals("-1")) {
-                System.out.println("返回登录界面...");
-                break;
-            } else if (input.equalsIgnoreCase("q")) {
-                System.out.println("已退出！");
-                System.exit(0);
-            } else if (input.startsWith("切换为")) {
-                Switch(questionManager, input);
-            } else {
-                try {
-                    int count = Integer.parseInt(input);
-                    if (count >= 10 && count <= 30) {
-                        questionManager.generateQuestions(count);
-                    } else if (count == -1) {
-                        System.out.println("返回登录界面...");
-                        break;
-                    } else {
-                        System.out.println("题目数量应在10~30之间");
-                    }
-                } catch (NumberFormatException e) {
-                    System.out.println("请输入有效的数字（10~30）或指定命令");
-                }
-            }
-        }
-    }
-    
-    private static void Switch(QuestionManager questionManager, String input) {
-    	String newRole = input.substring(3).trim();
-        switch (newRole) {
-            case "小学":
-                questionManager.setRole("primary");
-                System.out.println("已切换为小学难度");
-                break;
-            case "初中":
-                questionManager.setRole("junior");
-                System.out.println("已切换为初中难度");
-                break;
-            case "高中":
-                questionManager.setRole("senior");
-                System.out.println("已切换为高中难度");
-                break;
-            default:
-                System.out.println("请输入小学、初中和高中三个选项中的一个");
-        }
-    }
-    
-    private static String getRole(String role) {
-        switch (role) {
-            case "primary":
-                return "小学";
-            case "junior":
-                return "初中";
-            case "senior":
-                return "高中";
-            default:
-                return "未知";
-        }
-    }
-    
-}