Help with error

#1

prob: https://hack.codingblocks.com/app/contests/2022/125/problem

code: https://ide.codingblocks.com/s/421991

why am I getting an unwanted 0 when I print

#2 
node* root = buildTree(arr, 0, n-1);

call the build function like this

#3

oh okay, but the size still remained the same right ?

#4

yes size remain same
but there is some error in sizeof() some time it creates error

#5

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