void func(Node* node, const int& summary, int& max, const int& level, int& maxLevel)
	{
		if (node == nullptr)
		{
			return;
		}
		if (node->getData() + summary > max)
		{
			max = node->getData() + summary;
			maxLevel = level;
		}

		func(node->getLeft(), summary + node->getData(), max, level + 1, maxLevel);
		func(node->getRight(), summary + node->getData(), max, level + 1, maxLevel);
	}

	int funcMethod()
	{
		int maxLevel = INT_MIN;
		int maxStage = 0;
		func(head_, INT_MIN, maxLevel, 0, maxStage);
		return maxStage;
	}