public static void Main() { PriorityQueue <int> pq = new PriorityQueue <int>(); pq.Enque(2); pq.Enque(3); pq.Enque(4); pq.Enque(1); Console.WriteLine(pq.Peek()); Console.WriteLine(pq.Deque()); Console.WriteLine(pq.Peek()); Console.WriteLine(pq.Count); }