'''
The function is expected to return the lowest common ancestor of two data values that are passed to it.


Sample Input:

24

10 20 50 -1 60 -1 -1 30 70 -1 80 110 -1 120 -1 -1 90 -1 -1 40 100 -1 -1 -1

120

80

Sample Output:

80


https://www.youtube.com/watch?v=5xlRdBskWJE&list=PL-Jc9J83PIiEmjuIVDrwR9h5i9TT2CEU_&index=31
https://www.youtube.com/watch?v=w8rr1AYMlfw&list=PL-Jc9J83PIiEmjuIVDrwR9h5i9TT2CEU_&index=32

https://www.geeksforgeeks.org/print-path-root-given-node-binary-tree/
https://www.techiedelight.com/print-all-paths-from-leaf-to-root-binary-tree/

'''
