import stanford.karel.*;

public class RoadPavingKarel extends SuperKarel {
 
 public void fillHole() {
  turnRight();
  move();
  if (noBeepersPresent()) 
   putBeeper();
  turnAround();
  move();
  turnRight();
 }
 
 public void checkHole() {
  if (rightIsClear()) {
   fillHole();
  }
 }
 
 public void run() {
  while (frontIsClear()) {
   checkHole();
   move();
  }
  checkHole();
 }
}