static void Main(string[] args)
{
string variables = Console.ReadLine();
string[] tokens = variables.Split(' ');
int n = int.Parse(tokens[0]); //number of ceiling prototypes
int k = int.Parse(tokens[1]); //number of layers
List <BST> shapes = new List <BST>();
for (int i = 0; i < n; i++)
{
string data = Console.ReadLine();
string[] values = data.Split(' ');
BST newTree = new BST();
for (int x = 0; x < k; x++)
{
newTree.add(int.Parse(values[x]));
}
bool shapeExists = false;
foreach (BST tree in shapes)
{
if (newTree.isSameShape(tree))
{
shapeExists = true;
}
}
if (!shapeExists)
{
shapes.Add(newTree);
}
}
Console.Out.WriteLine(shapes.Count);
//Console.Read();
}
public bool isSameShape(BST other)
{
return(areSameShape(this.root, other.root));
}