Here is the list of some of the good tutorials written by codeforces users :-**C++**

- C++ Tricks by Swift

- C++ STL: map and set by adamant

**Data Structures**

- Algorithm Gym :: Data Structures by DarthPrince

- Everything about Segment Trees by DarthPrince

- Efficient and easy Segtree by Al.Cash

- A simple introduction to "Segment tree beats" by jiry_2

- Sack(DSU on trees) by Arpa

- SQRT Tree by gepardo

- Link-Cut tree by adamant

**DP**

- DP on Trees by darkshadows

- SOS DP by usaxena95

- Recurrent Sequences — Application of combinatorics in DP by TooNewbie

- Non-trivial DP tricks & Techniques by zscoder

- Digit DP by flash_7

**Math**

- Invariants and monovariants by TooNewbie

- Mobius Inversion by Nisiyama_Suzune

- Dirichlet convolution by Nisiyama_Suzune

- Fast convolution for 64-bit integers by quasisphere

- Tutorial for FFT/NTT Part 1 by sidhant

- Tutorial for FFT/NTT Part 2 by sidhant

- On Fast Fourier Transform by adamant

- Extended Eratosthenes Sieve by lucyanna2018

- Burnside Lemma by flash_7

**String Processing**

- Z algorithm by paladin8

- Suffix Automata by quasisphere

- Transition between Z- and prefix functions by adamant

- Manacher's algorithm and code readability by adamant

**Geometry**

- Quaternion algebra and geometry by adamant

- Slope Trick by zscoder

- Nearest Neighbor Search by P_Nyagolov

- Convex Hull trick and Li chao tree by adamant

- Geometry: 2D points and lines by Al.Cash

- Geometry: Polygon algorithms by Al.Cash

**Graphs**

- 0-1 BFS by dumbass

- 2-SAT by Swift

**Others**

- Parallel Binary Search by dumbass

- General ideas and tricks by adamant

*If you know some good tutorial on codeforces which is not in this list and another list provided below please mention it in the comments I will add that in the list.*

**Another Similar List**

Good Blog Post Resources about Algorithm and Data Structures

I very enjoyed Nisiyama_Suzune's tutorials on Mobius inversion and Dirchlet convolution.

http://codeforces.com/blog/entry/53925

http://codeforces.com/blog/entry/54150

Thanks added in the list.

And this good tutorials:

C++ Tricks

A short guide to suffix automata

Fast convolution for 64-bit integers

Tutorial on FFT/NTT—The tough made simple.(Part 1)

Tutorial on FFT/NTT — The tough made simple.(Part 2)

Thanks

http://codeforces.com/blog/entry/13529

I didn't know there is already a list on codeforces. Thanks

Efficient and easy segment trees by AI.Cash

Link: http://codeforces.com/blog/entry/18051

A recent SQRT-tree tutorial

Mo's Algorithm on Trees

Who is Mo

I believe OO0OOO00O0OOO0O00OOO0OO

Mo's name in chinese is 莫涛, while OO0OOO00O0OOO0O00OOO0OO is 杜瑜皓 I think it's not the same guy

http://codeforces.com/blog/entry/44351

Almost every blog written by adamant.

DSU On Tree

Dynamic Programming Optimizations

this.

Although I have almost all tutorials in Favourites, it's better to have them sorted in one place like this.

Counting Divisors of a Number

Nearest Neighbor Search by P_Nyagolov

Best one so far.

Also add this TooNewbie's blog Recurrent Sequences — Application of combinatorics in DP (basics) http://codeforces.com/blog/entry/54154

I think you could add

"How to sweep like a Sir"tutorial by DanAlex: http://codeforces.com/blog/entry/20377You can add this one too:

http://codeforces.com/blog/entry/57212

(A little self-advertisement)

Some time ago I wrote geometry tutorials:

Geometry: 2D points and lines [Tutorial]

Geometry: Polygon algorithms

Also, it would be better to organize the list by topic.

okay I'll do that.

http://codeforces.com/blog/entry/57338 DSU

DP optimizations: http://codeforces.com/blog/entry/8219

I think it would be better to classify 'Convex Hull trick and Li chao tree by adamant' as DP rather than geometry, although it takes inspiration from geometric concepts and data structures.