import java.util.* ;
import java.io.* ;

class Driver
{
  public  static void main ( String args[] ) throws Exception
  {
    
    Scanner s = null ;
    String tempName = "" ;
    int count = 0 ;
    int tempAge ;
    int tempTraining ;
    int tempId ;
    Dog tempDog ;
    
    
    LinkedList<Dog> dogList = new LinkedList<Dog>() ;
    
    for (int i = 1 ; i <= 50 ; i++)
    {
      tempName = "spot"+i ;
      tempDog = new Dog(tempName, 1000+i, i, 5) ;
      dogList.add(tempDog) ;
    }
    
    // Print out all the dogs
    System.out.println("All the dogs to start with") ;
    Iterator i = dogList.iterator() ;
    while (i.hasNext())
    {
    
      tempDog = (Dog) i.next() ;
      tempDog.Print() ;
    }
    
    // increase trained level by 2 for all dogs whose age is < 20
    i = dogList.iterator() ;
    while (i.hasNext())
    {
    
      tempDog = (Dog) i.next() ;
      if (tempDog.getAge() < 20)
        tempDog.setTrainedLevel( tempDog.getTrainedLevel() + 2) ;
     
    }
    
    // decrease trained level by 1 for all dogs whose ownerId is >= 20 and <= 30
    i = dogList.iterator() ;
    while (i.hasNext())
    {
    
      tempDog = (Dog) i.next() ;
      if ( (tempDog.getOwnerId() <= 1030) && (tempDog.getOwnerId() >= 1010) )
        tempDog.setTrainedLevel( tempDog.getTrainedLevel() - 1) ;
     
    }
    
    
    // Print out all the dogs
     System.out.println("All the dogs after BOTH sets of changes") ;
    i = dogList.iterator() ;
    while (i.hasNext())
    {
    
      tempDog = (Dog) i.next() ;
      tempDog.Print() ;
    }
    
    
    
    
    System.out.println("Doing the removals") ;
    
    // create a second list
    LinkedList<Dog> list2 = new LinkedList<Dog>() ;
    
    // add any of the dogs you do NOT want to remove to the second list
    i = dogList.iterator() ;
    while (i.hasNext())
    {
    
      tempDog = (Dog) i.next() ;
      
      // notice the "!" at the start of the if clause, these NOT ones are the ones to keep
      if ( !((tempDog.getTrainedLevel() >5 ) && (tempDog.getOwnerId() < 1030) ) )
      {
        list2.add(tempDog) ;
      }
      
    }
    
    // make the dogList equal to this new second list
    dogList = list2 ;
    
    
    
    
  
    
    
    // print out all the dogs
     System.out.println("All the dogs after the removals") ;
    i = dogList.iterator() ;
    while (i.hasNext())
    {
      tempDog = (Dog) i.next() ;
      tempDog.Print() ;
    }
    
    
    
  }
    
    
   
    
  
  
  
}