import java.util.ArrayList;
import java.util.List;
public class SetGeneric<T extends Object> {
    private final List<T> _places;
    private final int _maxCount;
    public int Count;
    public int Count() {
        return Count;
    }
    public SetGeneric(int count)
    {
        _places = new ArrayList<>();
        _maxCount = count;
    }
    public boolean Insert(T cruiser){
        if(_places.size() == _maxCount)
            return false;
        Insert(cruiser, 0);
        return true;
    }
    public boolean Insert(T monorail, int position){
        if (!(position >= 0 && position <= _places.size() && _places.size() < _maxCount))
            return false;
        _places.add(position, monorail);
        Count++;
        return true;
    }
    public boolean Remove(int position)
    {
        if(!(position >= 0 && position < _places.size()))
        {
            return false;
        }
        _places.remove(position);
        Count--;
        return true;
    }
    public T Get(int position)
    {
        if (position < Count() && position >= 0) {  return (T)_places.get(position); }
        return null;
    }
}