Hi CodeForces!
Problems below are sorted by difficulity, hope they will rocket up your coding ability...
Binary search
Data structures (incomplete)
DP
DFS
Graphs
Geometry
Bitmasks
DSU(hard)
special problems*
note : special problems are tasks which are effective when solved without reading the tags(they might be a bit harder too).
If you have any recommendations feel free to mention them in the comments section.
This blog will be updated on a monthly basis.
Special thanks to MhdMohammadi, M_H_M, KMAASZRAA and X_emad_X for finding these problems.
Also some people have complained that -Morass- has written a blog on the same topic, well the only difference is that this blog will be updated on a regular basis and you can access fresh tasks via this blog.