public static void Main(string[] args)
{
BinaryTree myTree = new BinaryTree ();
using (StreamReader fileIn = new StreamReader ("/Users/masha/Documents/ssu/c_sharp/Pr15R1ex5/Pr15R1ex5/input.txt"))
{
string line = fileIn.ReadToEnd ();
string[] mas = line.Split (' ');
foreach (string item in mas)
myTree.Add (int.Parse(item));
int sum = 0;
sum += Convert.ToInt32(myTree.Walk(myTree.Tree));
Console.WriteLine ("{0}",sum);
}
}