public class learner
{
  public static void main(String [] args)
  {
	  System.out.println("Please enter how many numbers");
	  int size = Console.readInt();
	  int [] a = new int [size];

     System.out.println("Enter numbers");
	  for(int i=0;i<a.length;i++)
	    {
		   a[i] = Console.readInt();
	    }

	   int index =0;

	  for(int i=0; i<a.length;i++)
	     if(a[i] == 5)
	     {
			 index =i;

		 }


  System.out.println("The index is"+ index);
	}
}