static void Main()
{
Stack1 s1 = new Stack1();
s1.Push(1);
s1.Push(2);
s1.Push(3);
Console.WriteLine(s1.Pop());
Console.WriteLine(s1.Pop());
Console.WriteLine(s1.Pop());
Stack2 s2 = new Stack2();
s2.Push("KOREA");
s2.Push("대한민국");
s2.Push("서울");
Console.WriteLine(s2.Pop());
Console.WriteLine(s2.Pop());
Console.WriteLine(s2.Pop());
Stack3 <string> s3 = new Stack3 <string>();
s3.Push("KOREA");
s3.Push("대한민국");
s3.Push("서울");
Console.WriteLine(s3.Pop());
Console.WriteLine(s3.Pop());
Console.WriteLine(s3.Pop());
}
static void Main()
{
Stack1 <int> s1 = new Stack1 <int>();
s1.Push(1);
s1.Push(2);
s1.Push(3);
Console.WriteLine(s1.Pop());
Console.WriteLine(s1.Pop());
Console.WriteLine(s1.Pop());
Stack1 <string> s2 = new Stack1 <string>();
s2.Push("KOREA");
s2.Push("대한민국");
s2.Push("서울");
Console.WriteLine(s2.Pop());
Console.WriteLine(s2.Pop());
Console.WriteLine(s2.Pop());
}