Should we remove the problem or update the link to following vjudge link where we only need a vjudge account? #5925
Description
Webpage: https://usaco.guide/adv/segtree-beats#problem-hdu-5306
Problem Link: http://acm.hdu.edu.cn/showproblem.php?pid=5306
My friend told me about the issue and after confirming myself.
I tried to register but online judge asking for a lot of private information including phone number.
Also, not sure whether it need chinese phone number or not.
Should we remove the problem or update the link to following vjudge link where we only need a vjudge account?
https://vjudge.net/problem/HDU-5306
