import java.util.*;
//A class to represent an (infinite capacity) Piggy Bank
//Operation supported are limited to
// drop() - add another US_Coin to this PiggyBank
// empty() - remove all coins from this PiggyBank
//           and return their total $-value 
public class PiggyBank
{
   //Instance Variable
   //A count of each different US_Coin in this PiggyBank
   private int[] coinCount;
   
   //Constructor
   //Creates a new empty PiggyBank
   public PiggyBank()
   {
      //One element for each different US_Coin
      this.coinCount = new int[US_Coin.values().length];
      
      //Initially, there are no coins in this PiggyBank
      for (int c = 0; c < this.coinCount.length; c++)
         this.coinCount[c] = 0;
   }
      
   //Mutator
   //Add any single US_Coin to this PiggyBank
   public void drop(US_Coin coin)
   {
      this.coinCount[ coin.ordinal() ]++;
   }
   
   //Mutator
   //Remove all coins from this PiggyBank
   //Return the total $-value of the coins removed
   public double empty()
   {
      double total = 0;
      for (US_Coin coin : US_Coin.values())
      {
         total += coin.getValue() * this.coinCount[coin.ordinal()];
         this.coinCount[coin.ordinal()] = 0;
      }
         
      return total / 100.0;
   }
   
   public String toString()
   {
      String image = "";
      for (US_Coin coin : US_Coin.values())
         image += this.coinCount[coin.ordinal()] + "x" + coin + "  ";
      return image.trim();
   }

}