I am studying graphs from galen_colin yt channel and came across these links where he said to do them as practice problems, but when clicking it shows: You are not allowed to view the contest. Ex: https://codeforces.me/gym/383769/problem/B, https://codeforces.me/gym/383769/problem/D and more. How do I access these questions? Thanks a lot in advance.
link to the problems
the very first section of the page has the invitation link (submission link) https://codeforces.me/contestInvitation/dec69ff61c53a4d92061070aaf6c4330a2033e4b