Hello codeforces. I need help with a set of tasks on some topics. I want to practice some algorithms, but I did not find basic tasks. The topics are $$$annealing$$$,$$$ HLD - decomposition$$$, $$$centroid$$$, $$$Kuhn$$$ $$$algorithm$$$, $$$DCP$$$, $$$Scanline$$$, $$$DP$$$ $$$on$$$ $$$trees$$$, $$$Link-cut$$$ $$$tree$$$.

I want this blog to store tasks on this topic. The tasks were stored so that they went from the most basic to the most complex. Who will throw out tasks, I will be very grateful. I will save these tasks that were thrown to me in the blog. From the easiest to the most difficult in my opinion.

Thanks in advance for your help.

Sorry for my English)