static void Main(string[] args)
{
PriorityQueue<int> heap = new PriorityQueue<int>();
heap.Enqueue(1);
heap.Enqueue(2);
heap.Enqueue(3);
heap.Enqueue(4);
heap.Dequeue();
heap.Enqueue(3);
heap.Enqueue(5);
Console.WriteLine(heap.Dequeue());
heap.ToString();
heap.Enqueue(2);
heap.ToString();
}