public class Nothing
{	 
  	public static void main (String[ ] args) 
  	{    
    		int k = 30;
        		         
    		triple (k);
    
    		System.out.println (k);
	} // method main

	public static void triple (int n)
  	{
      		n = n * 3;
  	} // method triple

} // class Nothing