diff --git a/README.md b/README.md
deleted file mode 100644
index 97098dd..0000000
--- a/README.md
+++ /dev/null
@@ -1,2 +0,0 @@
-# personal_program
-
diff --git a/doc/Run_Environment.md b/doc/Run_Environment.md
new file mode 100644
index 0000000..c22065c
--- /dev/null
+++ b/doc/Run_Environment.md
@@ -0,0 +1,22 @@
+**中小学数学卷子自动生成程序**
+
+运行系统
+- 基于 x64 的 Windows 11, version 24H2 (KB5064401)
+
+运行窗口
+- 基于 Windows 的 PowerShell
+
+编码语言版本
+- Python 3.8.0
+
+中文编码格式
+- UTF-8
+
+账户信息
+- 张三、李四、王二各有三个账号。示例：张三1，张三2，张三3。
+- 所有账户的初始密码均为 123。
+
+操作说明
+- 登陆后，switch 可选择出题年级
+- -1 退出账号
+- quit 退出系统
diff --git a/src/.vscode/settings.json b/src/.vscode/settings.json
new file mode 100644
index 0000000..c5867b4
--- /dev/null
+++ b/src/.vscode/settings.json
@@ -0,0 +1,8 @@
+{
+    "python.linting.flake8Enabled": true,
+    "python.formatting.provider": "yapf",
+    "python.linting.flake8Args": ["--max-line-length=248"],
+    "python.linting.pylintEnabled": false,
+    "python-envs.defaultEnvManager": "ms-python.python:system",
+    "python-envs.pythonProjects": []
+}
diff --git a/src/main.exe b/src/main.exe
new file mode 100644
index 0000000..9f75663
Binary files /dev/null and b/src/main.exe differ
diff --git a/src/main.py b/src/main.py
new file mode 100644
index 0000000..e77f055
--- /dev/null
+++ b/src/main.py
@@ -0,0 +1,275 @@
+import os
+import random
+import re
+from datetime import datetime
+from typing import List, Set, Dict, Optional
+
+class MathPaperGenerator:
+    def __init__(self):
+        # 预设用户账号
+        self.users = {
+            'primary': [
+                {'username': '张三1', 'password': '123', 'type': '小学'},
+                {'username': '张三2', 'password': '123', 'type': '小学'},
+                {'username': '张三3', 'password': '123', 'type': '小学'}
+            ],
+            'middle': [
+                {'username': '李四1', 'password': '123', 'type': '初中'},
+                {'username': '李四2', 'password': '123', 'type': '初中'},
+                {'username': '李四3', 'password': '123', 'type': '初中'}
+            ],
+            'high': [
+                {'username': '王五1', 'password': '123', 'type': '高中'},
+                {'username': '王五2', 'password': '123', 'type': '高中'},
+                {'username': '王五3', 'password': '123', 'type': '高中'}
+            ]
+        }
+        
+        self.current_user: Optional[Dict] = None
+        self.current_type: Optional[str] = None
+        self.base_dir = "数学试卷"
+        
+        # 创建基础目录
+        if not os.path.exists(self.base_dir):
+            os.makedirs(self.base_dir)
+
+    def authenticate(self, username: str, password: str) -> Optional[Dict]:
+        """用户认证"""
+        for user_type, user_list in self.users.items():
+            for user in user_list:
+                if user['username'] == username and user['password'] == password:
+                    return user
+        return None
+
+    def get_user_folder(self, username: str) -> str:
+        """获取用户专属文件夹路径"""
+        user_folder = os.path.join(self.base_dir, username)
+        if not os.path.exists(user_folder):
+            os.makedirs(user_folder)
+        return user_folder
+
+    def get_all_existing_questions(self, username: str) -> Set[str]:
+        """获取该用户所有已生成的题目"""
+        user_folder = self.get_user_folder(username)
+        all_questions = set()
+        
+        if not os.path.exists(user_folder):
+            return all_questions
+            
+        for filename in os.listdir(user_folder):
+            if filename.endswith('.txt'):
+                filepath = os.path.join(user_folder, filename)
+                try:
+                    with open(filepath, 'r', encoding='utf-8') as f:
+                        content = f.read()
+                        # 提取所有题目（去除题号）
+                        questions = re.findall(r'\d+\.\s*(.+?)(?=\n\d+\.|\n\n|$)', content, re.DOTALL)
+                        all_questions.update(question.strip() for question in questions)
+                except Exception as e:
+                    print(f"读取文件 {filename} 时出错: {e}")
+        
+        return all_questions
+
+    def generate_primary_question(self) -> str:
+        """生成小学题目：加减乘除"""
+        operators = ['+', '-', '×', '÷']
+        num_operands = random.randint(2, 5)  # 2-5个操作数
+        
+        operands = [random.randint(1, 100) for _ in range(num_operands)]
+        ops = [random.choice(operators) for _ in range(num_operands - 1)]
+        
+        # 构建表达式
+        expression = str(operands[0])
+        for i in range(num_operands - 1):
+            expression += f" {ops[i]} {operands[i+1]}"
+        
+        return expression
+
+    def generate_middle_question(self) -> str:
+        """生成初中题目：包含平方、开方、括号"""
+        if random.random() < 0.5:
+            # 基础四则运算带括号
+            a, b, c = random.randint(1, 100), random.randint(1, 100), random.randint(1, 100)
+            ops = ['+', '-', '×']
+            op = random.choice(ops)
+            return f"({a} {op} {b}) × {c}"
+        else:
+            # 平方或开方运算
+            num = random.randint(1, 20)
+            if random.random() < 0.5:
+                return f"{num}² + {random.randint(1, 100)}"
+            else:
+                return f"√{num**2} × {random.randint(1, 50)}"
+
+    def generate_high_question(self) -> str:
+        """生成高中题目：包含三角函数、乘方等"""
+        trig_functions = ['sin', 'cos', 'tan']
+        num = random.randint(1, 90)
+        
+        choice = random.randint(0, 2)
+        if choice == 0:
+            # 三角函数
+            func = random.choice(trig_functions)
+            return f"{func}({num}°) × {random.randint(1, 50)}"
+        elif choice == 1:
+            # 乘方运算
+            base = random.randint(2, 10)
+            exp = random.randint(2, 4)
+            return f"{base}^{exp} + {random.randint(1, 100)}"
+        else:
+            # 复杂表达式
+            a, b = random.randint(1, 50), random.randint(1, 50)
+            return f"({a} + {b}) × √{random.randint(1, 100)}"
+
+    def generate_question(self, difficulty: str) -> str:
+        """根据难度生成题目"""
+        if difficulty == '小学':
+            return self.generate_primary_question()
+        elif difficulty == '初中':
+            return self.generate_middle_question()
+        else:  # 高中
+            return self.generate_high_question()
+
+    def generate_paper(self, username: str, difficulty: str, num_questions: int) -> bool:
+        """生成试卷"""
+        user_folder = self.get_user_folder(username)
+        existing_questions = self.get_all_existing_questions(username)
+        generated_questions = []
+        
+        attempts = 0
+        max_attempts = num_questions * 10  # 防止无限循环
+        
+        while len(generated_questions) < num_questions and attempts < max_attempts:
+            question = self.generate_question(difficulty)
+            
+            # 检查题目是否重复
+            if question not in existing_questions and question not in generated_questions:
+                generated_questions.append(question)
+                existing_questions.add(question)
+            
+            attempts += 1
+        
+        # 如果无法生成足够的不重复题目
+        if len(generated_questions) < num_questions:
+            print(f"警告：只能生成 {len(generated_questions)} 道不重复的题目")
+        
+        # 生成文件名
+        timestamp = datetime.now().strftime("%Y-%m-%d-%H-%M-%S")
+        filename = f"{timestamp}.txt"
+        filepath = os.path.join(user_folder, filename)
+        
+        # 写入文件
+        try:
+            with open(filepath, 'w', encoding='utf-8') as f:
+                for i, question in enumerate(generated_questions, 1):
+                    f.write(f"{i}. {question}")
+                    if i < len(generated_questions):  # 题目之间空一行
+                        f.write("\n\n")
+            
+            print(f"试卷已生成：{filepath}")
+            print(f"成功生成 {len(generated_questions)} 道题目")
+            return True
+        except Exception as e:
+            print(f"文件保存失败: {e}")
+            return False
+
+    def switch_type(self, new_type: str) -> bool:
+        """切换题目类型"""
+        valid_types = ['小学', '初中', '高中']
+        if new_type in valid_types:
+            self.current_type = new_type
+            print(f"当前选择为{new_type}出题")
+            return True
+        else:
+            print("请输入小学、初中和高中三个选项中的一个")
+            return False
+
+    def run(self):
+        """主运行循环"""
+        print("=== 中小学数学卷子自动生成程序 ===")
+        
+        while True:
+            # 登录阶段
+            while self.current_user is None:
+                try:
+                    input_str = input("请输入用户名和密码（用空格隔开，输入quit退出）：").strip()
+                    if input_str.lower() == 'quit':
+                        print("再见！")
+                        return
+                    
+                    parts = input_str.split()
+                    if len(parts) != 2:
+                        print("请输入正确的用户名、密码")
+                        continue
+                    
+                    username, password = parts
+                    user = self.authenticate(username, password)
+                    
+                    if user:
+                        self.current_user = user
+                        self.current_type = user['type']
+                        print(f"当前选择为{self.current_type}出题")
+                    else:
+                        print("请输入正确的用户名、密码")
+                
+                except KeyboardInterrupt:
+                    print("\n再见！")
+                    return
+                except Exception as e:
+                    print(f"输入错误：{e}")
+            
+            # 登录后的操作阶段
+            while self.current_user is not None:
+                try:
+                    # 确保 current_type 不为 None
+                    if self.current_type is None:
+                        self.current_type = self.current_user['type']
+                    
+                    prompt = f"准备生成{self.current_type}数学题目，请输入生成题目数量（10-30，输入-1退出当前用户，输入'switch'切换类型）："
+                    user_input = input(prompt).strip()
+                    
+                    if user_input == '-1':
+                        print("退出当前用户")
+                        self.current_user = None
+                        self.current_type = None
+                        break
+                    elif user_input.startswith('切换为'):
+                        # 处理切换类型
+                        new_type = user_input[3:].strip()
+                        self.switch_type(new_type)
+                    elif user_input.lower() == 'switch':
+                        new_type = input("请输入要切换的类型（小学/初中/高中）：").strip()
+                        self.switch_type(new_type)
+                    else:
+                        # 处理生成题目
+                        try:
+                            num = int(user_input)
+                            if 10 <= num <= 30:
+                                # 确保 difficulty 参数是字符串类型
+                                difficulty = self.current_type or self.current_user['type']
+                                self.generate_paper(
+                                    self.current_user['username'], 
+                                    difficulty, 
+                                    num
+                                )
+                            else:
+                                print("题目数量应在10-30之间")
+                        except ValueError:
+                            print("请输入有效的数字")
+                
+                except KeyboardInterrupt:
+                    print("\n再见！")
+                    return
+                except Exception as e:
+                    print(f"发生错误：{e}")
+
+def main():
+    """主函数"""
+    try:
+        generator = MathPaperGenerator()
+        generator.run()
+    except Exception as e:
+        print(f"程序发生错误: {e}")
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/src/数学试卷/李四1/2025-09-29-19-21-40.txt b/src/数学试卷/李四1/2025-09-29-19-21-40.txt
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index 0000000..98da1be
--- /dev/null
+++ b/src/数学试卷/李四1/2025-09-29-19-21-40.txt
@@ -0,0 +1,49 @@
+1. 2 + 36 × 19 - 49
+
+2. 61 + 8 + 50 ÷ 89
+
+3. 3 ÷ 71 - 83 ÷ 83
+
+4. 83 ÷ 48 - 73 × 49 × 93
+
+5. 64 - 19
+
+6. 53 - 40 - 97
+
+7. 50 × 95 + 82 - 79 + 44
+
+8. 86 × 50 × 9 ÷ 60 × 29
+
+9. 15 ÷ 48 - 48 + 35
+
+10. 39 ÷ 37 × 15 - 81
+
+11. 9 × 20 ÷ 37 ÷ 50 - 100
+
+12. 67 ÷ 45
+
+13. 74 ÷ 70 + 22
+
+14. 2 × 26 + 31 - 30 + 9
+
+15. 6 × 57 - 76 - 55 - 31
+
+16. 96 ÷ 34 ÷ 88
+
+17. 26 × 11 ÷ 24
+
+18. 54 × 71 × 54 ÷ 81
+
+19. 100 ÷ 50 ÷ 57 - 94 + 75
+
+20. 18 × 54 × 41
+
+21. 32 + 52 + 22 - 35 + 26
+
+22. 44 - 100
+
+23. 1 - 48 ÷ 8 ÷ 17
+
+24. 95 + 24 - 20
+
+25. 78 ÷ 100 ÷ 23 - 49 + 42
\ No newline at end of file