Really Need HELP URGENT for TRTOKENS-Tokens On A Tree

I am trying very hard but not able to get AC on single test case.

Solution Link:

Approach: Go to each node and if it havn’t token then find the deepest node of that’s node subtree which has token, and store the difference b/w their depths.

I am using two dfs first one for calculating depth and flat the tree.
Second for traversing the subtree of each node.

Please help me :cry: :pray: :pray: