public static void Main()
{
var myStack = new MyStack <string>();
while (true)
{
string[] input = Console.ReadLine().Split(new char[] { ' ', ',' }, StringSplitOptions.RemoveEmptyEntries);
if (input[0] == "END")
{
break;
}
if (input[0] == "Push")
{
myStack.Push(input);
}
try
{
if (input[0] == "Pop")
{
myStack.Pop();
}
}
catch (Exception ae)
{
Console.WriteLine(ae.Message);
}
}
for (int i = 0; i < 2; i++)
{
foreach (var item in myStack)
{
Console.WriteLine(item);
}
}
}
static void Main(string[] args)
{
string comand = Console.ReadLine();
int[] elements = comand.Split(new string[] { " ", ", " }, StringSplitOptions.RemoveEmptyEntries)
.Select(int.Parse).Skip(1).ToArray();
MyStack <int> stack = new MyStack <int>(elements);
while ((comand = Console.ReadLine()) != "END")
{
string[] comandArgs = comand.Split();
if (comandArgs[0] == "Pop")
{
stack.Pop();
}
else if (comandArgs[0] == "Push")
{
int element = int.Parse(comandArgs[1]);
stack.Push(element);
}
}
Console.WriteLine(string.Join(Environment.NewLine, stack));
Console.WriteLine(string.Join(Environment.NewLine, stack));
}