Hi everybody !

I've learn to use Fenwick Tree for a long time but recently I perceive I didn't use it optimally.

So I have some question about Fenwick Tree, I need your help :

1, Can we use Fenwick Tree for min-max query for an inteval array;

2, Can we use it as a Dynamic Fenwick Tree with number of nodes not exeed 1e9 and how to.

3, Can we one Fenwick Tree for two usages: sum and min or sum and max.

They maybe fool questions, please help me if you can !!

Sorry because of my poor English !!