diff --git a/netflix_v1/.vscode/settings.json b/netflix_v1/.vscode/settings.json
new file mode 100644
index 0000000..3c7c05c
--- /dev/null
+++ b/netflix_v1/.vscode/settings.json
@@ -0,0 +1,55 @@
+{
+    "files.associations": {
+        "algorithm": "cpp",
+        "array": "cpp",
+        "atomic": "cpp",
+        "bit": "cpp",
+        "cctype": "cpp",
+        "chrono": "cpp",
+        "clocale": "cpp",
+        "cmath": "cpp",
+        "codecvt": "cpp",
+        "compare": "cpp",
+        "concepts": "cpp",
+        "cstdarg": "cpp",
+        "cstddef": "cpp",
+        "cstdint": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "ctime": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "deque": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "ratio": "cpp",
+        "string": "cpp",
+        "string_view": "cpp",
+        "system_error": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "fstream": "cpp",
+        "initializer_list": "cpp",
+        "iomanip": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "new": "cpp",
+        "ostream": "cpp",
+        "ranges": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "streambuf": "cpp",
+        "typeinfo": "cpp"
+    }
+}
\ No newline at end of file
diff --git a/netflix_v1/a.out b/netflix_v1/a.out
new file mode 100755
index 0000000..3aef75e
Binary files /dev/null and b/netflix_v1/a.out differ
diff --git a/netflix_v1/movies.txt b/netflix_v1/movies.txt
new file mode 100644
index 0000000..384078b
--- /dev/null
+++ b/netflix_v1/movies.txt
@@ -0,0 +1,2 @@
+interstellar 1 23 32 34 1 0
+doraemon 3 4 45 48 0 0
diff --git a/netflix_v1/netflix_v4 b/netflix_v1/netflix_v4
new file mode 100755
index 0000000..dbd84bb
Binary files /dev/null and b/netflix_v1/netflix_v4 differ
diff --git a/netflix_v1/netflix_v4.cpp b/netflix_v1/netflix_v4.cpp
new file mode 100644
index 0000000..11c0120
--- /dev/null
+++ b/netflix_v1/netflix_v4.cpp
@@ -0,0 +1,483 @@
+
+
+#include <iostream>
+#include<string>
+#include<fstream>
+#include<sstream>
+#include<vector>
+using namespace std;
+
+
+class Movie {
+    public:
+        string Name;
+        int Rating;
+        int Duration;
+        int Rent_Cost;
+        int Purchase_Cost;
+        bool is_rented;
+        bool is_purchased;
+
+        
+    };
+
+class Admin {
+    public:
+    void add_movie() {
+        ofstream out("movies.txt", ios::app);
+        Movie m;
+    
+        cout << "Enter movie name: ";
+        cin >> ws;
+        getline(cin, m.Name);
+        cout << "Enter rating (0-10): ";
+        cin >> m.Rating;
+        m.is_rented = false;
+        m.is_purchased = false;
+        cout << "Enter duration (in minutes): ";
+        cin >> m.Duration;
+        cout << "Enter rent cost: ";
+        cin >> m.Rent_Cost;
+        cout << "Enter purchase cost: ";
+        cin >> m.Purchase_Cost;
+
+        out << m.Name << " "<< m.Rating << " " << m.Duration << " "<< m.Rent_Cost << " " << m.Purchase_Cost << " " << m.is_rented << " " << m.is_purchased << "\n";
+        
+        out.close();
+
+        cout << "Movie added successfully.\n";
+    }
+
+    void delete_movie() {
+        string movie_to_delete;
+        cout << "Enter movie name to delete: ";
+        cin >> ws;
+        getline(cin, movie_to_delete);
+    
+        ifstream infile("movies.txt");
+        ofstream temp("temp.txt");
+    
+        bool found = false;
+        string line;
+        while (getline(infile, line)) {
+            stringstream ss(line);
+            string name;
+            ss >> name;
+            if (name != movie_to_delete) {
+                temp << line << endl;
+            } else {
+                found = true;
+            }
+        }
+    
+        infile.close();
+        temp.close();
+    
+        if (found) {
+            remove("movies.txt");
+            rename("temp.txt", "movies.txt");
+            cout << "Movie deleted successfully." << endl;
+        } else {
+            remove("temp.txt");
+            cout << "Movie not found in database." << endl;
+        }
+    }
+    
+};
+    
+
+
+
+
+void signup() {
+    string username, password, confirm_password;
+    cout << "Enter your username: ";
+    cin >> username;
+    ifstream infile("users.txt");
+    if(infile.is_open()) {
+        string temp_username, temp_password;
+        bool user_exists = false;
+        while (infile >> temp_username >> temp_password && !user_exists) {
+            if (temp_username == username) {
+                cout << "Username already exists. Please try a different one." << endl;
+                cout << "Enter a new username: ";
+                cin >> username;
+                user_exists = true;
+            }
+        }
+    }
+    infile.close();
+    cout << "Enter your password: ";
+    cin >> password;
+    cout << "Confirm your password: ";
+    cin >> confirm_password;
+    if (password != confirm_password) {
+        cout << "Passwords do not match. Please try again." << endl;
+        
+    }
+    
+    ofstream outfile("users.txt", ios::app);
+    outfile << username << " " << password << endl;
+    outfile.close();  
+    string filepath = username + ".txt";
+    ofstream user_file(filepath, ios::app) ;
+    
+        user_file << "Rented_Movies:\n";
+        user_file << "Purchased_Movies:\n";
+        user_file << "Dues: 0\n";
+        user_file.close();
+   
+    cout << "User saved successfully! Please log in now." << endl;
+
+
+}
+
+int verify(string username, string password) {
+    ifstream infile("users.txt");
+    if(infile.is_open()) {
+        string temp_username, temp_password;
+        while (infile >> temp_username >> temp_password) {
+            if (temp_username == username && temp_password == password) {
+                cout << "Login successful!" << endl;
+                return 1; // Login successful
+            }
+        }
+    }
+    cout << "Invalid username or password." << endl;
+    return 0; // Login failed
+}
+
+class User {
+    public:
+    string curr_user;
+    User(const string& name) {
+        curr_user = name;
+    }
+    
+    void rent_movie() {
+        string preference;
+        cout << "Enter the name of the movie you want to rent: ";
+        cin >> ws;
+        getline(cin, preference);
+    
+        vector<string> movie_lines;
+        ifstream movies("movies.txt");
+        string line;
+        bool found = false;
+    
+        while (getline(movies, line)) {
+            stringstream ss(line);
+            string name;
+            int rating, duration, rent_cost, purchase_cost;
+            bool is_rented, is_purchased;
+            ss >> name >> rating >> duration >> rent_cost >> purchase_cost >> is_rented >> is_purchased;
+    
+            if (name == preference) {
+                if (is_rented) {
+                    cout << "Movie already rented." << endl;
+                    return;
+                }
+    
+                // Update user file
+                fstream user_file(curr_user + ".txt");
+                vector<string> user_lines;
+                while (getline(user_file, line)) user_lines.push_back(line);
+                user_file.close();
+    
+                ofstream user_file_out(curr_user + ".txt");
+                for (string& l : user_lines) {
+                    user_file_out << l << "\n";
+                    if (l == "Rented_Movies:") {
+                        user_file_out << name << "\n";
+                    }
+                    if (l.rfind("Dues:", 0) == 0) {
+                        int prev_dues = stoi(l.substr(5));
+                        user_file_out << "Dues: " << (prev_dues + rent_cost) << "\n";
+                    }
+                }
+                user_file_out.close();
+    
+                // Update is_rented in movie
+                stringstream updated;
+                updated << name << " " << rating << " " << duration << " " << rent_cost << " " << purchase_cost << " 1 " << is_purchased;
+                movie_lines.push_back(updated.str());
+                found = true;
+            } else {
+                movie_lines.push_back(line);
+            }
+        }
+        movies.close();
+    
+        ofstream out("movies.txt");
+        for (string& l : movie_lines) out << l << "\n";
+        out.close();
+    
+        if (found) cout << "Movie rented successfully.\n";
+        else cout << "Movie not found.\n";
+    }
+    
+    
+    void view_rented_movies() {
+        ifstream user_file(curr_user + ".txt");
+        string line;
+        bool print = false;
+    
+        cout << "Your Rented Movies:\n";
+        while (getline(user_file, line)) {
+            if (line == "Rented_Movies:") {
+                print = true;
+                continue;
+            } else if (line == "Purchased_Movies:" || line == "Dues:" || line == "Rented_TV_Shows:" || line == "Purchased_TV_Shows:") {
+                break;
+            }
+            if (print && !line.empty()) {
+                cout << "- " << line << "\n";
+            }
+        }
+        user_file.close();
+    }
+
+    void purchase_movie() {
+        string preference;
+        cout << "Enter the name of the movie you want to purchase: ";
+        cin >> ws;
+        getline(cin, preference);
+    
+        vector<string> movie_lines;
+        ifstream movies("movies.txt");
+        string line;
+        bool found = false;
+    
+        while (getline(movies, line)) {
+            stringstream ss(line);
+            string name;
+            int rating, duration, rent_cost, purchase_cost;
+            bool is_rented, is_purchased;
+            ss >> name >> rating >> duration >> rent_cost >> purchase_cost >> is_rented >> is_purchased;
+    
+            if (name == preference) {
+                if (is_purchased) {
+                    cout << "Movie already purchased." << endl;
+                    return;
+                }
+    
+                // Update user file
+                fstream user_file(curr_user + ".txt");
+                vector<string> user_lines;
+                while (getline(user_file, line)) user_lines.push_back(line);
+                user_file.close();
+    
+                ofstream user_file_out(curr_user + ".txt");
+                for (string& l : user_lines) {
+                    user_file_out << l << "\n";
+                    if (l == "Purchased_Movies:") {
+                        user_file_out << name << "\n";
+                    }
+                    if (l.rfind("Dues:", 0) == 0) {
+                        int prev_dues = stoi(l.substr(5));
+                        user_file_out << "Dues: " << (prev_dues + purchase_cost) << "\n";
+                    }
+                }
+                user_file_out.close();
+    
+                // Update is_purchased in movie
+                stringstream updated;
+                updated << name << " " << rating << " " << duration << " " << rent_cost << " " << purchase_cost << " " << is_rented << " 1";
+                movie_lines.push_back(updated.str());
+                found = true;
+            } else {
+                movie_lines.push_back(line);
+            }
+        }
+        movies.close();
+    
+        ofstream out("movies.txt");
+        for (string& l : movie_lines) out << l << "\n";
+        out.close();
+    
+        if (found) cout << "Movie purchased successfully.\n";
+        else cout << "Movie not found.\n";
+    }
+    
+
+    void view_purchased_movies() {
+        ifstream user_file(curr_user + ".txt");
+        string line;
+        bool print = false;
+    
+        cout << "Your Purchased Movies:\n";
+        while (getline(user_file, line)) {
+            if (line == "Purchased_Movies:") {
+                print = true;
+                continue;
+            } else if (line == "Purchased_Movies:" || line == "Dues:" || line == "Rented_TV_Shows:" || line == "Purchased_TV_Shows:") {
+                break;
+            }
+            
+            if (print && !line.empty()) {
+                cout << "- " << line << "\n";
+            }
+        }
+        user_file.close();
+    }
+
+    void check_dues() {
+        ifstream user_file(curr_user + ".txt");
+        string line;
+        while (getline(user_file, line)) {
+            if (line.rfind("Dues:", 0) == 0) { // line starts with "Dues:"
+                cout << line << endl;
+                user_file.close();
+                return;
+            }
+        }
+        user_file.close();
+        cout << "No dues information found." << endl;
+    }
+    
+
+};
+
+int main() {
+    string admin_username, admin_password;
+    // Admin credentials
+    // These should be stored securely in a real application
+    admin_username = "soumya";
+    admin_password = "soumya123";
+    
+
+    int n = 1;
+
+    while(n) {
+        cout<<"Welcome to Netflix"<<endl;
+        cout<<"1. User SignUp"<<endl;
+        cout<<"2. User SignIn"<<endl;
+        cout<<"3. Admin Login"<<endl;
+        cout<<"4. Exit"<<endl;
+        cout<<"Enter your choice: ";
+        int a;
+        cin>>a;
+        switch(a) {
+            case 1: {
+            // Adding a block scope to avoid bypassing initialization
+            signup();
+            break;
+            }
+            case 2: {
+            // User sign-in logic
+            string temp_username, temp_password;
+            cout << "Enter your username: ";
+            cin >> temp_username;
+            cout << "Enter your password: ";
+            cin >> temp_password;
+            int choice;
+            int k = 1;
+            if (verify(temp_username, temp_password)) {
+                User curr_user(temp_username);
+                cout << "Welcome " << temp_username << endl;
+
+                while(k) {
+                
+                cout << "1. Rent a Movie" << endl;
+                cout << "2. Purchase a Movie" << endl;
+                cout << "3. View rented movies" << endl;
+                cout << "4. View purchased movies" << endl;
+                cout << "5. Check dues" << endl;
+                cout << "6. Exit" << endl;
+                cout << "Enter your choice: "<<endl;
+            cin >> choice;
+           
+            switch(choice) {
+                case 1: {
+                    // Rent a movie logic (to be implemented)
+                    curr_user.rent_movie();
+                    break;
+                }
+                case 2: {
+                    // Purchase a movie logic (to be implemented)
+                    curr_user.purchase_movie();
+                    break;
+                }
+                case 3: {
+                    // View rented movies logic (to be implemented)
+                    curr_user.view_rented_movies();
+                    break;
+                }
+                case 4: {
+                    // View purchased movies logic (to be implemented)
+                    curr_user.view_purchased_movies();
+                    break;
+                }
+                case 5: {
+                    // Check dues logic (to be implemented)
+                    curr_user.check_dues();
+                    break;
+                }
+                case 6: {
+                    k = 0; // Exit the loop
+                    break;
+                }
+                default:
+                    cout << "Invalid choice. Please try again." << endl;
+                    break;
+            }
+
+        }
+               }
+               break;
+            } 
+            
+            case 3: {
+            // Admin login logic (to be implemented)
+            string admin_username_confirm, admin_password_confirm;
+            cout << "Enter admin username: ";
+            cin >> admin_username_confirm;
+            cout << "Enter admin password: ";
+            cin >> admin_password_confirm;
+            if (admin_username_confirm == admin_username && admin_password_confirm == admin_password) {
+                Admin adminUser;
+                bool continued = true;
+                while (continued) {
+                    cout << "\nAdmin Menu:" << endl;
+                    cout << "1. Add Movie" << endl;
+                    cout << "2. Delete Movie" << endl;         
+                    cout << "3. Exit" << endl;
+                    int a;
+                    cin >> a;
+
+                    switch(a) {
+                        case 1:
+                            adminUser.add_movie();
+                            break;
+                        case 2:
+                        { 
+                            
+                            adminUser.delete_movie();
+                            
+                            break;
+
+                        }
+                        case 3:
+                            continued = false;
+                            break;
+                        default:
+                            cout << "Invalid choice. Please try again." << endl;
+                    }
+                }
+            } else {
+                cout << "Invalid admin credentials. Please try again." << endl;
+            }
+
+            break;
+            }
+            case 4: {
+            n = 0; // Exit the loop
+            break;
+            }
+            default: {
+            cout << "Invalid choice. Please try again." << endl;
+            break;
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/netflix_v1/soumya.txt b/netflix_v1/soumya.txt
new file mode 100644
index 0000000..964a747
--- /dev/null
+++ b/netflix_v1/soumya.txt
@@ -0,0 +1,5 @@
+Rented_Movies:
+interstellar
+Purchased_Movies:
+Dues: 0
+Dues: 32
diff --git a/netflix_v1/users.txt b/netflix_v1/users.txt
new file mode 100644
index 0000000..0ab7a38
--- /dev/null
+++ b/netflix_v1/users.txt
@@ -0,0 +1 @@
+soumya 1234
diff --git a/otw.md b/otw.md
new file mode 100644
index 0000000..9cf7569
--- /dev/null
+++ b/otw.md
@@ -0,0 +1,47 @@
+### Level 0 : 
+ssh bandit0@bandit/labs.overthewire.org -p 2220 ( ssh used to remotely connect to machine )
+when prompted for password we enter bandit0
+
+### Level 1 : 
+ls ( to list all the files present in the directory)
+cat readme.md to see the contents of the file ( which contained the password for the next level ) 
+
+### Level 2 : 
+ls 
+cat < - ( cannot use cat - ) 
+
+### Level 3 : 
+cat "spaces in the filename" ( cannot use cat spaces in the filename as it will treat each word as different file ) 
+
+### Level 4 : 
+cd inhere ( to change directory to inhere ) 
+ls -a ( list all the files including the hidden files ) 
+cat .hidden 
+
+### Level 5 : 
+cd inhere
+file ./* ( used a wildcard instead of a filename to get the type for all the files ) 
+cat < -file07
+
+### Level 7 :
+ file command used with:-type f(looking for a file), -user, -group, 2>/dev/null( to hide the error messages )
+find / -user bandit7 -group bandit7 -type f 2>/dev/null / is used to search outside the directory 
+
+### Level 8 : 
+cat data.txt | grep millionth ( grep is used to find a particular word in the data ) 
+ 
+### Level 9 : 
+sort data.txt | uniq -u ( uniq command is used to find unique elements but the data needs to be sorted as it removes duplicate data)
+
+### Level 10 : 
+strings data.txt | grep === ( strings is used to filter all the strings from the data ) 
+
+### Level 11 : 
+cat data.txt 
+base64 -d data.txt ( base634 - d is used to decode the encoded text ) 
+
+### Level 12 : 
+cat data.txt ( contains ROT13 enxrypted data ) 
+cat data.txt | tr 'A-Za-z' 'N-ZA-Mn-za-m' ( tr is used to replace old characters with new characters ) 
+
+