Check if an N-ary tree is in valid state after adding a new connection.\n```\nboolean isValid(Node root, Node n1, Node n2);\n```\n\n**Example:**\n![](https://assets.leetcode.com/users/roccosen/image_1564194475.png)\n\n[Onsite experience](https://leetcode.com/discuss/interview-experience/344433/Amazon-or-SDE2-or-NYC-or-July-2019-Offer)

Check if an N-ary tree is in valid state after adding a new connection.\n\nboolean isValid(Node root, Node n1, Node n2);\n\n\nExample:\n\n\nOnsite experience