public class Balloon
{
   private int maxRadius;
   private int radius;
   private boolean popped;

   /**
    * Creates a balloon with given maximum radius; initially, the balloon is deflated (radius is zero) and is not popped.
    * @param max  maxium radius of the balloon
    */
   public Balloon(int max)
   {
      maxRadius = max;
      radius = max;
      popped = false;
   }

   /**
    * Returns the current radius of this balloon
    */
   public int getRadius(){
      return radius;
   }
  
   /**
    * Increases the radius of the balloon by a specified amount causing it to pop if the radius is increased beyond the maximum radius (this method has no effect if the balloon is already popped).
    * @param amount the amount by which the to increse the radius
    */ 
   public void inflate(int amount){
      radius+=amount;
   }

   /**
    * Deflates the balloon without popping it (a deflated balloon has radius zero).0
    */
   public void deflate(){
      maxRadius = 0;
   }
   /**
    * Determines whether this balloon is popped.
    */
   public boolean isPopped(){
      return popped;
   }

   /**
    * Pops the balloon (a popped balloon has radius zero).
    */
   public void pop(){
      radius = 0;
   }
}