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

- C++ STL: Policy based data structures by adamant

- Competitive C++ Manifesto: A Style Guide by Swift

- Catching silly mistakes with GCC by andreyv

**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

- dsu on trees by UNoobAble

- SQRT Tree by gepardo

- Link-Cut tree by adamant

- Easy implementation of Compressed 2D Binary Indexed Tree for grid of binary numbers by sdnr1

- Introduction to New Data Structure: Wavelet Trees by rachitjain

- [Tutorial] Searching Binary Indexed Tree in O(log(N)) using Binary Lifting by sdnr1

- An alternative sorting order for Mo's algorithm by gepardo

- How can we perform segment queries with Palindromic Tree? by duckladydinh

- Easy and (Semi)Efficient Dynamic Segment Trees (with Policy Hash Tables) by Chilli

- 2D Range Minimum Query in O(1) by fnf47

- Nifty implementation of multi-dimensional Binary Indexed Trees using templates. by mouse_wireless

- Top 10 optimizations 2017- (collectors edition) by bukefala

- [Tutorial] Sparse table by ADJA

- Tutorial on Trie and example problems by darkshadows

**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

- Optimized solution for Knapsack problem by sdnr1

- Dp On Trees by JafarIsBack

**Math**

- Invariants and monovariants by TooNewbie

- Mobius Inversion by Nisiyama_Suzune

- Mobius Inversion and Multiplicative functions : Tutorial by revivedDevil

- 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

- 2 Special cases of Gaussian by .AJ.

- Number of Solutions to a Linear Algebraic Equation by J-C

- Rolling hash and 8 interesting problems by dmkozyrev

- Avoid overflow in linear diophantine equation by Jakube

- [Tutorial] Chinese Remainder Theorem by Valiors

- Linear Recurrence and Berlekamp-Massey Algorithm by fjzzq2002

- A blog on the Sprague-Grundy Theorem by sirknightingfail

- Schonhage-Strassen (FFT-based integer multiplication) tutorial by sammyMaX

- [Tutorial] Inclusion-Exclusion Principle, Part 1. by Roundgod

- Number Theory in Competitive Programming [Tutorial] by rkm0959

- On burnside (again) by sorry_marymarine

- A Bitwise Convolution Tutorial by Anai

- The Fear of Gaussian Elimination by godmar

- Derangement Generation of an Array [Tutorial] by naruhodou

- [Tutorial] Matroid intersection in simple words by ATSTNG

- Solving Linear Recurrence for Programming Contest by fushar

**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

- [Tutorial] Convex Hull Trick — Geometry being useful by meooow

**Graphs**

- 0-1 BFS by dumbass

- 2-SAT by Swift

- Algorithm Gym :: Graph Algorithms by DarthPrince

- On Euler tour trees by ifsmirnov

- 'Meet in the middle' with shortest path problems of unweighted graph by liv1n9

- Vertex cover and 2-SAT by irkstepanov

- Add edges to a digraph to make it strongly connected by chaotic_iak

- [Tutorial] The DFS tree and its applications: how I found out I really didn't understand bridges by -is-this-fft-

- The “Bridge Tree” of a graph by baba

**Others**

- Parallel Binary Search by dumbass

- General ideas and tricks by adamant

- Some Tutorials -- Or attempts at it :P by rajarshi_basu

- Tutorial On Tof (Ternary Search) by Mahdi_Jfri

- YouTube Channels for Competitive Programmers by Silver_

- Gym Contest with Editorial by Learner99

- Writing a book on geometry — Update by vlecomte

- Problem Topics by -Morass-

*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.

Introduction to New Data Structure: Wavelet Trees by rachitjain

hi,

here is my help :)

i think most of them are useful for the beginning of learning they're algo ...

btw, they're here :

http://codeforces.com/blog/entry/21189 for matrix

http://codeforces.com/blog/entry/58894 it's a little introduction to mitm

http://codeforces.com/blog/entry/12239 for HLD

http://codeforces.com/blog/entry/45578 for parallel bin.search

http://codeforces.com/blog/entry/43230 for MO on tree

Number of Solutions to a Linear Algebraic Equation

Easy implementation of Compressed 2D BIT for grid of binary numbers

http://codeforces.com/blog/entry/60445

This is a good one, https://codeforces.com/blog/entry/68138

I made a blog on the following topics:

Matrix Exponentiation

Finding Derangements(If possible) of an array

These have got decent upvotes so I believe they are useful.

dsu on trees

hope it help to learn dsu on trees :)

Woah, the author of this blog is so smart!

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