I tried that.
It doesn’t always work.
It often shows things I specifically asked it not to, including non Tier A contests.
Also, what about receiving emails about new contests, and going to the page using the link in the email,
where it does not clearly say it is for tier A only.
You only find out after trying to input names.
Now I try to input any idea first in the box and see if it says Tier A only.
If it is OK then I will proceed.
Before, I wasted time working on a contest only to find I could not participate.