public override int GetHashCode()
{
int hash = (113 + (11 * RootValue.GetHashCode()) + (17 * RootKey.GetHashCode()) + (31 * subTrees.Count));
for (int i = 0; i < subTrees.Count; i++)
{
hash += ((int)Math.Pow(73, i) * subTrees[i].GetHashCode());
}
return(hash);
}