using System;

public class Stack

{

    int top=-1;

    int []arr=new int[3];

    public static void Main()

    {

        Stack obj=new Stack();

        obj.Push(3);

        obj.Pop();

        obj.Push(5);

        obj.Push(8);

        obj.Pop();

        obj.Pop();

        obj.Pop();

    }

    public void Push(int num)

    {

        top++;

        arr[top]=num;

    }

    public void Pop()

    {

        if(top==-1)

        {

            Console.WriteLine("Stack is Empty");            

        }

        else

        {

            Console.WriteLine(arr[top]);

            top--;

        }

    }

}