How can I accept the input

#1

I wanted to know how can I make the buildTree() function to take the input. Like I at least wanted to know based on the input given how the BT is constructed.
With context to this:
1 2
2 2
3 0
4 0
5 2
6 0
7 0
2

Output:
20

Find sum at level k trees
#2

Hey it is like
Level 0: 1
Level 1: 2 5
Level 2: 3 4 6 7
You can think of it as 1 has 2 children
Then 2 has 2 children (with 1 as root)
Then follow children of 2 which are leaf nodes
Then comes second child of 1 i.e 5 which has 2 children
Finally we have 2 children of 5 that are 6 and 7 which are leaf nodes
At last level is given and that is 2 so sum at level 2 is 20…

#3

Hi sagnik
I am marking your doubt as resolved. You can reopen it if you feel so

#4

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