Hello, programmers! I am practicing binary search these days and so I am looking for problems based on the concept of binary search on answer. I am unable to find any good source for the same that's why I am writing this blog post. It would be great if you guys could please give me a list of good binary search on answer problems. I tried using CF tags but I suppose they don't work very well as I got many random problems as well.

More educational problems would be preferred, obviously.

Thanks.