It seems hard to do bridge and block-cut tree problems. Problems: - Bridge Tree - https://codeforces.com/contest/1000/problem/E - https://codeforces.com/contest/652/problem/E - Block-cut: - https://codeforces.com/gym/102512/problem/A - https://www.codechef.com/problems/SADPAIRS - Blogs - https://codeforces.com/blog/entry/68138 - https://en.wikipedia.org/wiki/Biconnected_component
It seems hard to do bridge and block-cut tree problems.
Problems: