import java.util.Arrays;

public class Test2_P3_31 {

   private static int depth;

   public static void main(String[] args) {
      int[] ary = new int[] {-5, 1, -3, 4, 8, -9, 6};
      depth = -1;
      blorp(ary, ary.length);
   }


   public static int blorp(int[] a, int n) {
      depth++;
      String message = "Received a: " + Arrays.toString(a) + "; n: " + n;
      printMessage(message);
      int result;
      if (n == 0) { result = 0; }
      else if (a[n-1] < 0) {
         a[n-1] = 0;
         result = blorp(a, n-1) + 1;
      }
      else {
         result = blorp(a, n-1);
      }
      printMessage("Having " + message + ", now returning " + result);
      depth--;
      return result;
   }

   /* Prints the specified string, preceded by a number of spaces
   ** proportional to the value of 'depth'.  Then skips to next line.
   */
   private static void printMessage(String s) {
      printSpaces(2*depth);
      System.out.println(s);
   }

   /* Prints the specified number of spaces.
   ** pre: k >= 0
   */
   private static void printSpaces(int k) {
      for (int i=0; i != k; i++) {
         System.out.print(' ');
      }
   }
}