InterviewBit Problems   2-Sum Binary Tree : Unsolved

About the 2-Sum Binary Tree : Unsolved category (1)
There can be two approaches to solve the problem (2)
Custom input gives correct answer, but fails in the actual test (2)
How to traverse these kind of values of a tree? (1)
Custom input give correct ans but same test case failed on submition. Test Case:9 17 2 18 -1 8 -1 -1 -1 -1 9 (2)
Code giving different answers for custom and test case.... what's wrong with the platform? (2)
Wrong test case for bst (3)
Easiest solution using map (1)
Editorial Solution: Isn't it O(n) space as it's possible that the set contains all distinct n elements? (1)
Weak Test Cases :( (2)
Memory Limit is not cheking by online judge (2)
Organized Solution - Python 3 (1)
Different answer in Submit and Custom Test (2)
Same logic works in java, but not in c++ ? can anyone help (4)
Test and custom test on a same test case giving different answers (2)
Proposed java solutions doesn't meet given constraints (1)
Solution uses O(n) space (2)
BST or Binary tree (1)
Hint gives nothing, memory restriction met by "know-the-trick" solution only (1)
How to optimize space? (4)
I am not sure how the tree is built in the given problem here (1)
This can be solved by making a doubly linked list (1)
Test case is wrong (1)
Lightweight solution uses O(n) space (1)
Hash Array or hashMap (2)
Getting a segmentation fault (1)
Wrong answer on submission. same test case gave correct answer in custom input (1)
No match of custom input and code checker out (1)
Getting TLE for 2-sum binary tree (2)
I am using inorder traversal and storing it in a vector and then using two pointe (3)