diff --git a/20092018/HelloWorld.java b/20092018/HelloWorld.java
new file mode 100644
index 0000000..3cb8676
--- /dev/null
+++ b/20092018/HelloWorld.java
@@ -0,0 +1,23 @@
+/* 
+
+	- Classes must always be named starting with Capital letters
+	- Public classes must always be on a file with the same name as the class
+	- read from args: args[0]
+	
+	= HOMEWORK: 
+		a = Print a list of numbers from 0 to 10
+		b = Print a list of numbers from 10 to 0
+*/
+
+public class HelloWorld{
+	
+	public static void main (String args[]){
+		//int n = 50;		
+		for(int i=0; i<10; i++){			
+			System.out.println("Hello guy");		
+		}
+		
+	}
+	
+	
+}
\ No newline at end of file
diff --git a/20092018/Main.java b/20092018/Main.java
new file mode 100644
index 0000000..88f4af9
--- /dev/null
+++ b/20092018/Main.java
@@ -0,0 +1,25 @@
+class Main {
+  public static long fib(int input){
+	  if(input <= 1 && input >= 0){
+		  return input;
+	  }
+	  else if(input < 0) {
+		  return (-1) * (fib(input + 1) - fib(input + 2));
+	  }
+	  else{
+		return fib(input - 1) + fib(input - 2);
+	  }
+  }
+
+  public static void main(String[] args) {
+		System.out.println("List of first 20 negative Fibonacci numbers:\nindex\tresult\n");
+		for(int i=-20; i<0; i++){
+			System.out.println(i + 1 + "\t" + fib(i + 1));
+		}  
+
+		System.out.println("\nList of first 20 positive Fibonacci numbers:\nindex\tresult\n");
+		for(int i=0; i<20; i++){
+			System.out.println(i + 1 + "\t" + fib(i + 1));
+		}  
+	}
+}
diff --git a/20092018/README.md b/20092018/README.md
index 5bf333f..b252e30 100644
--- a/20092018/README.md
+++ b/20092018/README.md
@@ -53,9 +53,6 @@ Yes I know, you found out the amazing power of pressing tab and having the auto-
 [Creating Environment variables: ](https://www.mkyong.com/java/how-to-set-java_home-on-windows-10/)
 
 
-## Exercises
-This module has a HackerRank challenge, you can check it on the following page: [www.hackerrank.com/elte-basicjava-module-1](http://www.hackerrank.com/elte-basicjava-module-1)
-
 
 ## Documentation regarding the examples:
 
diff --git a/README.md b/README.md
index 8b970df..cb7c133 100644
--- a/README.md
+++ b/README.md
@@ -42,8 +42,8 @@ Even better, let's remember some stuff then...
 Any sort of plagiarism, copies, ideological falsehood  or unlawful behavior may be subject of auction in the format of the university regulations.
 
 #### Course grades
-* Challenges and class exercises (10%)
-* Final assignment (40%)
+* Challenges and class exercises (20%)
+* Final assignment (30%)
 * Exam (50%)
 
 * Accepted pull requests can count as extra points in all the activities with grades, being that these points will never compose more than 30% of the grade.