I'm finding an alternate site that contain the problem of http://www.tsinsen.com/ because I cannot sign up and submit.

I thought I could search gg for problem statement and it will suggest the same problem in other site such as:

• https://loj.ac/

• https://uoj.ac/

However, now I can't even get access to what I need because it's always redirecting to log in site whenever I search for any related site.

Do anyone have any idea I can get access to these problem??

REALLY THANKS!!!! :>