Can anyone access https://cp-algorithms.com/ website? I am getting server error.

If you remember your problems of the google challenge on 10 July, please list the problem, even if it is very brief.
Some of the previous blogs regarding the problems -
https://mirror.codeforces.com/blog/entry/92765
https://mirror.codeforces.com/blog/entry/92729

I am not able to see the editorial page. It says you are not allowed to view the requested page.

I don't know who puts the tags on the problems. Since I do not have edit access to it. But from it, I think that the participants only add the tags. The editorial does not always list every possible solution for which we need to look through the comments in order to find alternate approaches. Can instead of that a link be also attached to the tag which has that intended solution. Multiple links may have the same solution as a single strategy does not always work for a problem.

Many times I am not able to see the streams that are going on and when I want to see them afterwards it becomes difficult as they are many of the streams and it is hard to find a stream of present interest. Can we be provided with a filter there also? Sorry for the content description it is my first blog entry.