public static void Main()
{
var stack = new CustomStack <int>();
while (true)
{
var command = Console.ReadLine()
.Split(new[] { ' ', ',' }
, StringSplitOptions.RemoveEmptyEntries);
switch (command[0])
{
case "Push":
var elements = command
.Skip(1)
.Select(int.Parse)
.ToList();
stack.Push(elements);
break;
case "Pop":
stack.Pop();
break;
case "END":
for (int i = 0; i < 2; i++)
{
foreach (var element in stack)
{
Console.WriteLine(element);
}
}
return;
}
}
}
