Max-query 1 problem

[Ashwini-Rao-1282454568566755 (Ashwini Rao)]

https://hack.codingblocks.com/contests/c/547/311

https://ide.codingblocks.com/s/35764

i dont where i am going wrong ,can you please help me.

[abhishek_trigunait]

Why are you doing
tree[index]=min(tree[2*index],tree[2*index+1])
in build?