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.

$$$Who$$$ $$$can$$$ $$$just$$$ $$$send$$$ $$$me$$$ $$$the$$$ $$$problems$$$ $$$from$$$ $$$these$$$ $$$topics$$$ $$$please$$$. $$$I$$$ $$$WOULD$$$ $$$BE$$$ $$$VERY$$$ $$$GRATEFUL!!!!!!!$$$

Sorry for my English)