#ifndef PRIORITYQUEUE
#define PRIORITYQUEUE
template<class T>class priorityQueue
{
public:
     virtual void add(T value)=0;
     T deleteMin();
     virtual int isEmpty()const=0;
     virtual T min()const=0;
     virtual void removeMin()=0;
};
template<class T>T priorityQueue<T>::deleteMin()
{
    T result=min();
    removeMin();
    return result;
}
#endif