diff --git a/src/ChatClient.java b/src/ChatClient.java
index 1ab6271..9fcfd74 100644
--- a/src/ChatClient.java
+++ b/src/ChatClient.java
@@ -5,148 +5,182 @@
 import java.awt.*;
 import java.awt.event.*;
 
-public class ChatClient {
-	
-	JTextArea incoming;
-	JTextField outgoing;
-	JTextArea userList;
-	BufferedReader reader;
-	PrintWriter writer;
-	Socket sock;
-	String username;
-	String[] ps;
-	
-	public static void main(String[] args) 
-	{
-		ChatClient client = new ChatClient();
-		client.go();
-	}
-	
-	public void go() 
-	{
-		
-		JFrame frame = new JFrame("Client");
-		JPanel mainPanel = new JPanel();
-		JLabel l1, l2;
-		incoming = new JTextArea(15, 50);
-		incoming.setLineWrap(true);
-		incoming.setWrapStyleWord(true);
-		incoming.setEditable(false);
-		l1 = new JLabel("Message Box");
-		JScrollPane qScroller = new JScrollPane(incoming);
-		qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
-		qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
-		
-		userList = new JTextArea(15, 10);
-		userList.setLineWrap(true);
-		userList.setWrapStyleWord(true);
-		userList.setEditable(false);
-		l2 = new JLabel("User List");
-		JScrollPane uScroller = new JScrollPane(userList);
-		uScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
-		
-		outgoing = new JTextField(20);
-		JButton sendButton = new JButton("Send");
-		sendButton.addActionListener(new SendButtonListener());
-		//mainPanel.add(l1);
-		//mainPanel.add(l2);
-		mainPanel.add(qScroller);
-		mainPanel.add(uScroller);
-		mainPanel.add(outgoing);
-		mainPanel.add(sendButton);
-		setUpNetworking();
-		
-		username = JOptionPane.showInputDialog("Welcome ! Kindly say who you are ?");
-		
-		frame.setTitle(username.toUpperCase());
-		
-		Thread readerThread = new Thread(new IncomingReader());
-		readerThread.start();
-		
-		frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
-		//frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
-		frame.setSize(800, 400);
-		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-		frame.setVisible(true);
-		
-	}
-	
-	private void setUpNetworking() 
-	{
-		
-		try 
-		{
-			sock = new Socket("127.0.0.1", 6666);
-			InputStreamReader streamReader = new InputStreamReader(sock.getInputStream());
-			reader = new BufferedReader(streamReader);
-			writer = new PrintWriter(sock.getOutputStream());
-			System.out.println("Networking established");
-		
-		}catch(IOException ex) 
-		{
-			ex.printStackTrace();
-		}
-	}
-	
-	public class SendButtonListener implements ActionListener
-	{
-			
-		public void actionPerformed(ActionEvent ev) 
-		{
-			try {
-				
-				writer.println(username + " : " + outgoing.getText());
-				writer.flush();
-				
-			}catch(Exception ex) {
-				ex.printStackTrace();
-			}
-			
-			outgoing.setText("");
-			outgoing.requestFocus();
-		}
-	}
-	
-	public class IncomingReader implements Runnable
-	{
-		public void run() {
-			String message;
-			
-			try {
-				
-				while((message = reader.readLine()) != null) {
-					if(!messageOrList(message)) {
-						//System.out.println("read" + message);
-						incoming.append( message + "\n");
-					}else {
-						userList.setText("");
-						for(int i = 1; i < ps.length; i++)
-						{
-							//System.out.println(ps[i]);
-							
-							userList.append(ps[i]+"\n");
-						}
-						
-					}
-					
-				}
-			}catch(Exception ex) {
-				ex.printStackTrace();
-			}
-		}
-		public boolean messageOrList(String ms) 
-		{
-			ps = ms.split("\\,");
-			
-			if(ps[0].equals("000.."))
-			{
-				return true;
-			}else
-			{
-				return false;
-			}
-			
-			
-		}
-	}
+
+
+// CLASS: ChatClient
+public class ChatClient
+{
+
+    JTextArea incoming;
+    JTextField outgoing;
+    JTextArea userList;
+    BufferedReader reader;
+    PrintWriter writer;
+    Socket sock;
+    String username;
+    String[] ps;
+
+	// FUNCTION: main
+    public static void main(String[] args)
+    {
+        ChatClient client = new ChatClient();
+        client.go();
+    }
+
+    // FUNCTION: go
+    public void go()
+    {
+
+        JFrame frame = new JFrame("Client");
+        JPanel mainPanel = new JPanel();
+
+        JLabel l1, l2;
+        l1 = new JLabel("Message Box");
+        l2 = new JLabel("User List");
+
+        incoming = new JTextArea(15, 50);
+        incoming.setLineWrap(true);
+        incoming.setWrapStyleWord(true);
+        incoming.setEditable(false);
+
+        
+        JScrollPane qScroller = new JScrollPane(incoming);
+        qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
+        qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
+
+        userList = new JTextArea(15, 10);
+        userList.setLineWrap(true);
+        userList.setWrapStyleWord(true);
+        userList.setEditable(false);
+
+        
+        JScrollPane uScroller = new JScrollPane(userList);
+        uScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
+
+        outgoing = new JTextField(20);
+        JButton sendButton = new JButton("Send");
+        sendButton.addActionListener(new SendButtonListener());
+
+        //mainPanel.add(l1);
+        //mainPanel.add(l2);
+        mainPanel.add(qScroller);
+        mainPanel.add(uScroller);
+        mainPanel.add(outgoing);
+        mainPanel.add(sendButton);
+
+        setUpNetworking();
+
+        username = JOptionPane.showInputDialog("Welcome ! Kindly say who you are ?");
+
+        frame.setTitle(username.toUpperCase());
+
+        Thread readerThread = new Thread(new IncomingReader());
+        readerThread.start();
+
+        frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
+        //frame.getContentPane().add(BorderLayout.CENTER, mainPanel);
+        frame.setSize(800, 400);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setVisible(true);
+
+    }
+
+    // FUNCTION: setUpNetworking
+    private void setUpNetworking()
+    {
+
+        try
+        {
+            sock = new Socket("127.0.0.1", 6666);
+
+            InputStreamReader streamReader = new InputStreamReader(sock.getInputStream());
+
+            reader = new BufferedReader(streamReader);
+            writer = new PrintWriter(sock.getOutputStream());
+
+            System.out.println("Networking established");
+
+        }
+        catch(IOException ex)
+        {
+            ex.printStackTrace();
+        }
+    }
+
+    // CLASS: SendButtonListener
+    public class SendButtonListener implements ActionListener
+    {
+
+
+    	// FUNCTION: actionPerformed
+        public void actionPerformed(ActionEvent ev)
+        {
+            try
+            {
+                writer.println(username + " : " + outgoing.getText());
+                writer.flush();
+            }
+            catch(Exception ex)
+            {
+                ex.printStackTrace();
+            }
+
+            outgoing.setText("");
+            outgoing.requestFocus();
+        }
+    }
+
+
+    // CLASS: IncomingReader
+    public class IncomingReader implements Runnable
+    {
+
+    	// FUNCTION: run
+        public void run()
+        {
+            String message;
+
+            try
+            {
+                while((message = reader.readLine()) != null)
+                {
+                    if(!messageOrList(message))
+                    {
+                        //System.out.println("read" + message);
+                        incoming.append( message + "\n");
+                    }
+                    else
+                    {
+                        userList.setText("");
+                        for(int i = 1; i < ps.length; i++)
+                        {
+                            //System.out.println(ps[i]);
+                            userList.append(ps[i] + "\n");
+                        }
+                    }
+                }
+            }
+            catch(Exception ex)
+            {
+                ex.printStackTrace();
+            }
+        }
+
+        // FUNCTION: messageOrList
+        public boolean messageOrList(String ms)
+        {
+            ps = ms.split("\\,");
+
+            if(ps[0].equals("000.."))
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+
+        }
+    }
+
 }
diff --git a/src/ChatServer.java b/src/ChatServer.java
index cb3ba4c..62d5063 100644
--- a/src/ChatServer.java
+++ b/src/ChatServer.java
@@ -5,204 +5,240 @@
 
 import javax.swing.*;
 
-
-
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 
+// CLASS: ChatServer
+public class ChatServer
+{
+
+    JTextArea clientsMessage;
+    JTextArea userList;
+    ArrayList clientOutputStreams;
+    JButton sendButton;
+    JTextField smsToAll;
+    ArrayList<String> uname = new ArrayList<String>();
+    ArrayList<Socket> port = new ArrayList<Socket>();
+
+
+    // CLASS: ClientHandler
+    public class ClientHandler implements Runnable
+    {
+
+        BufferedReader reader;
+        Socket sock;
+        //JTextArea clientsMessage; get nullPointerException for this line wasted one day
+
+        // FUNCTION: ClientHandler
+        public ClientHandler(Socket clientSocket)
+        {
+
+            try
+            {
+                sock = clientSocket;
+
+                InputStreamReader isReader = new InputStreamReader(sock.getInputStream());
+                reader = new BufferedReader(isReader);
+            }
+            catch(Exception ex)
+            {
+                ex.printStackTrace();
+            }
+        }
+
+        // FUNCTION: run
+        public void run()
+        {
+
+            String message;
+            String[] parts = null;
+            boolean once = false;
+
+            try
+            {
+                while((message = reader.readLine()) != null)
+                {
+                    if(!once)
+                    {
+                        //System.out.println(sock.getPort());
+                        port.add(sock);
+                        parts = message.split("\\:");
+                        //System.out.println(parts[0]);
+                        uname.add(parts[0]);
+                        once = true;
+                    }
+
+                    //System.out.println("read" + message);
+                    clientsMessage.append(message + "\n");
+                    tellEveryone(message);
+                    showingClients();
+                }
+
+                uname.remove(parts[0]);
+                port.remove(sock);
+                showingClients();
+                tellEveryone(parts[0].toUpperCase() + "(" + sock + ")" + "has left the conversation\n");
+                clientsMessage.append(parts[0].toUpperCase() + "(" + sock + ")" + "has left the conversation\n");
+            }
+            catch(Exception ex)
+            {
+                ex.printStackTrace();
+            }
+
+        }
+    }
+
+    // CLASS: SendButtonListener
+    public class SendButtonListener implements ActionListener
+    {
+
+        // FUNCTION: actionPerformed
+        @Override
+        public void actionPerformed(ActionEvent arg0)
+        {
+            clientsMessage.append("SERVER : " + smsToAll.getText() + "\n");
+            tellEveryone("SERVER : " + smsToAll.getText());
+
+            smsToAll.setText("");
+            smsToAll.requestFocus();
+        }
+
+    }
+
+    // FUNCTION: showingClients
+    public void showingClients()
+    {
+        String st = "000..,";
+        String t = "";
+
+        for(String s : uname)
+        {
+            st += s + ",";
+            t += s + "\n";
+        }
+
+        System.out.println(st);
+
+        Iterator it = clientOutputStreams.iterator();
+        userList.setText(t);
+
+        while(it.hasNext())
+        {
+            try
+            {
+                PrintWriter writer = (PrintWriter) it.next();
+                writer.println(st);
+                writer.flush();
+            }
+            catch(Exception ex)
+            {
+                ex.printStackTrace();
+            }
+        }
+    }
+
+
+    // FUNCTION: go
+    public void go()
+    {
+        clientOutputStreams = new ArrayList();
+
+        try
+        {
+            ServerSocket serverSock = new ServerSocket(6666);
+
+            while(true)
+            {
+                Socket clientSocket = serverSock.accept();
+                //System.out.println(clientSocket.getPort());
+                PrintWriter writer = new PrintWriter(clientSocket.getOutputStream());
+                clientOutputStreams.add(writer);
+
+                Thread t = new Thread(new ClientHandler(clientSocket));
+                t.start();
+                System.out.println("got a connection from " + clientSocket);
+                //showingClients();
+            }
+        }
+        catch(Exception ex)
+        {
+            ex.printStackTrace();
+        }
+
+    }
+
+
+    // FUNCTION: tellEveryOne
+    public void tellEveryone(String message)
+    {
+
+        Iterator it = clientOutputStreams.iterator();
+
+        while(it.hasNext())
+        {
+            try
+            {
+                PrintWriter writer = (PrintWriter) it.next();
+                writer.println(message);
+                writer.flush();
+            }
+            catch(Exception ex)
+            {
+                ex.printStackTrace();
+            }
+        }
+    }
+
+    // FUNCTION: addAction
+    public void addAction()
+    {
+        JFrame window = new JFrame("SERVER");
+        JPanel content = new JPanel();
+
+        clientsMessage = new JTextArea(15, 50);
+        clientsMessage.setLineWrap(true);
+        clientsMessage.setWrapStyleWord(true);
+        clientsMessage.setEditable(false);
+
+        JScrollPane qScroller = new JScrollPane(clientsMessage);
+        qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
+        qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
+
+        userList = new JTextArea(15, 10);
+        userList.setLineWrap(true);
+        userList.setWrapStyleWord(true);
+        userList.setEditable(false);
+
+        JScrollPane uScroller = new JScrollPane(userList);
+        uScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
+
+        smsToAll = new JTextField(20);
+
+        sendButton = new JButton("Send To All");
+        sendButton.addActionListener(new SendButtonListener());
+
+        content.add(qScroller);
+        content.add(uScroller);
+        content.add(smsToAll);
+        content.add(sendButton);
+
+        window.getContentPane().add(BorderLayout.CENTER, content);
+        window.setSize(800, 400);
+        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        window.setVisible(true);
+
+        clientsMessage.setText("");
+
+    }
+
+    // FUNCTION: main
+    public static void main(String[] args)
+    {
 
-public class ChatServer {
-
-	JTextArea clientsMessage;
-	JTextArea userList;
-	ArrayList clientOutputStreams;
-	JButton sendButton;
-	JTextField smsToAll;
-	ArrayList<String> uname = new ArrayList<String>();
-	ArrayList<Socket> port = new ArrayList<Socket>();
-	
-	public class ClientHandler implements Runnable{
-		
-		BufferedReader reader;
-		Socket sock;
-		//JTextArea clientsMessage; get nullPointerException for this line wasted one day
-		
-		public ClientHandler(Socket clientSocket) {
-			
-			try {
-				sock = clientSocket;
-				InputStreamReader isReader = new InputStreamReader(sock.getInputStream());
-			    reader = new BufferedReader(isReader);
-			    
-			    
-			}catch(Exception ex) {
-				ex.printStackTrace();
-			}
-		}
-		
-		
-		public void run() {
-			String message;
-			String[] parts = null;
-			boolean once = false;
-			
-			
-			try {
-					while((message = reader.readLine()) != null) {
-						if(!once)
-						{
-							//System.out.println(sock.getPort());
-							port.add(sock);
-							parts = message.split("\\:");
-							//System.out.println(parts[0]);
-							uname.add(parts[0]);
-							once = true;
-						}
-						//System.out.println("read" + message);
-						clientsMessage.append(message+"\n");
-						tellEveryone(message);
-						showingClients();
-					}
-					uname.remove(parts[0]);
-					port.remove(sock);
-					showingClients();
-					tellEveryone(parts[0].toUpperCase()+ "("+sock+")"+"has left the conversation\n");
-					clientsMessage.append(parts[0].toUpperCase()+ "("+sock+")"+"has left the conversation\n");
-				}
-			catch(Exception ex) {
-				ex.printStackTrace();
-			}
-			
-		}
-	}	
-	
-	public  class SendButtonListener implements ActionListener{
-
-		@Override
-		public void actionPerformed(ActionEvent arg0) {
-			// TODO Auto-generated method stub
-			clientsMessage.append("SERVER : " + smsToAll.getText()+"\n");
-			tellEveryone("SERVER : " + smsToAll.getText());
-			
-			smsToAll.setText("");
-			smsToAll.requestFocus();
-			
-		}
-		
-	}
-	
-	
-	public void showingClients()
-	{
-		String st = "000..,";
-		String t = "";
-		for(String s : uname)
-		{
-			st += s+",";
-			t += s+"\n";
-		}
-		
-		System.out.println(st);
-		
-		Iterator it = clientOutputStreams.iterator();
-		userList.setText(t);
-		while(it.hasNext()) {
-			try {
-				PrintWriter writer = (PrintWriter) it.next();
-				writer.println(st);
-				writer.flush();
-			}catch(Exception ex) {
-				ex.printStackTrace();
-			}
-		}
-		
-			
-	}
-	
-		public void go() {
-			clientOutputStreams = new ArrayList();
-			
-			try {
-				ServerSocket serverSock = new ServerSocket(6666);
-				
-				while(true) {
-					Socket clientSocket = serverSock.accept();
-					//System.out.println(clientSocket.getPort());
-					PrintWriter writer = new PrintWriter(clientSocket.getOutputStream());
-					clientOutputStreams.add(writer);
-					
-					
-					Thread t = new Thread(new ClientHandler(clientSocket));
-					t.start();
-					System.out.println("got a connection from "+clientSocket);
-					//showingClients();
-				}
-			}catch(Exception ex) {
-				ex.printStackTrace();
-			}
-			
-		}
-		
-		
-		
-		public  void tellEveryone(String message) {
-			Iterator it = clientOutputStreams.iterator();
-			while(it.hasNext()) {
-				try {
-					PrintWriter writer = (PrintWriter) it.next();
-					writer.println(message);
-					writer.flush();
-				}catch(Exception ex) {
-					ex.printStackTrace();
-				}
-			}
-		}
-		public  void addAction()
-		{
-			JFrame window = new JFrame("SERVER");
-		      JPanel content = new JPanel();
-		      clientsMessage = new JTextArea(15,50);
-		      clientsMessage.setLineWrap(true);
-		      clientsMessage.setWrapStyleWord(true);
-		      clientsMessage.setEditable(false);
-		      JScrollPane qScroller = new JScrollPane(clientsMessage);
-			  qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
-			  qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
-			  
-			    userList = new JTextArea(15, 10);
-				userList.setLineWrap(true);
-				userList.setWrapStyleWord(true);
-				userList.setEditable(false);
-				JScrollPane uScroller = new JScrollPane(userList);
-				uScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
-				
-			  
-			  smsToAll = new JTextField(20);
-			  sendButton = new JButton("Send To All");
-			  sendButton.addActionListener(new SendButtonListener());
-			  content.add(qScroller);
-			  content.add(uScroller);
-			  content.add(smsToAll);
-			  content.add(sendButton);
-			  window.getContentPane().add(BorderLayout.CENTER, content);
-			  window.setSize(800, 400);
-			  window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-			  window.setVisible(true);
-			  clientsMessage.setText("");
-			  
-		}
-		
-		public static void main(String[] args) {
-			
-			  ChatServer cs = new ChatServer();
-			  cs.addAction();
-			  cs.go();
-			  
-			  
-			  
-		}
-	
-	
-	
+        ChatServer cs = new ChatServer();
+        
+        cs.addAction();
+        cs.go();
+    }
 }
diff --git a/src/I.java b/src/I.java
index 1da2aca..3ab6e7c 100755
--- a/src/I.java
+++ b/src/I.java
@@ -3,57 +3,80 @@
 import java.io.*;
 import java.math.BigInteger;
 
+// CLASS: Main
 class Main
 {
+	// FUNCTION: main
 	public static void main (String[] args) throws java.lang.Exception
 	{
-		// your code goes here
+        // your code goes here
 		Scanner scan = new Scanner(System.in);
 		int t = scan.nextInt();
-		for(int cs=1;cs<=t;++cs){
-		String a = scan.next();
-		String b = scan.next();
-		System.out.println(a+" "+b);
-		BigInteger bg = new BigInteger(a);
-		BigInteger gg = new BigInteger(b);
-		BigInteger ans = pow(bg,gg);
-		//System.out.println(ans.toString());
-		String an = ans.toString();
-		long gt = gv(an);
-		
-		while(gt >= 10)
+
+		for(int cs = 1; cs <= t; ++cs)
 		{
-			gt = sod(gt);
-		}
-		System.out.println("Case "+cs+": "+ gt);
+			String a = scan.next();
+			String b = scan.next();
+
+			System.out.println(a + " " + b);
+
+			BigInteger bg = new BigInteger(a);
+			BigInteger gg = new BigInteger(b);
+			BigInteger ans = pow(bg, gg);
+            //System.out.println(ans.toString());
+
+			String an = ans.toString();
+			long gt = gv(an);
+
+			while(gt >= 10)
+			{
+				gt = sod(gt);
+			}
+			System.out.println("Case " + cs + ": " + gt);
 		}
-		
+
 	}
+
+    // FUNCTION: sod
 	public static long sod(long x)
 	{
 		long anss = 0;
-		while(x !=0)
+
+		while(x != 0)
 		{
-			anss += x%10;
-			x/=10;
+			anss += x % 10;
+			x /= 10;
 		}
+
 		return anss;
 	}
-	public static long gv(String x){
-		long xx =0;
-		for(int i=0;i<x.length();++i){
+
+    // FUNCTION: gv
+	public static long gv(String x)
+	{
+		long xx = 0;
+
+		for(int i = 0; i < x.length(); ++i)
+		{
 			xx += x.charAt(i) - '0';
 		}
+
 		return xx;
 	}
-	public static BigInteger  pow(BigInteger base, BigInteger exponent) {
-  BigInteger result = BigInteger.ONE;
-  while (exponent.signum() > 0) {
-    if (exponent.testBit(0)) result = result.multiply(base);
-    base = base.multiply(base);
-    exponent = exponent.shiftRight(1);
-  }
-  return result;
-}
-	
+
+    // FUNCTION: pow
+	public static BigInteger pow(BigInteger base, BigInteger exponent)
+	{
+		BigInteger result = BigInteger.ONE;
+
+		while (exponent.signum() > 0)
+		{
+			if (exponent.testBit(0)) result = result.multiply(base);
+			
+			base = base.multiply(base);
+			exponent = exponent.shiftRight(1);
+		}
+		return result;
+	}
+
 }
\ No newline at end of file