/*
// Definition for a Node.
class Node {
public:
int val;
vector<Node*> children;
Node() {}
Node(int _val, vector<Node*> _children) {
val = _val;
children = _children;
}
};
*/
class Solution {
public:
int maxDepth(Node* root) {
if(!root)
return 0;
int depth = 0;
for(auto n: root->children){
depth = max(depth,maxDepth(n));
}
return depth+1;
}
};