Problems

Note that you can solve most task in any order!
Already solved ones are at the bottom of the table.

Tips and Tricks on solving programming puzzles
by Mike Mirzayanov - author of CodeForces

Volume: Algorithms - total 72 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
27	Bubble Sort	ES RU SK		6209	4.85
26	Greatest Common Divisor	ES SK RU		6042	4.90
104	Triangle Area	ES		3512	5.84
47	Caesar Shift Cipher	SK		3450	5.87
120	Selection Sort			2131	6.71
33	Parity Control	RU		2456	6.46
34	Binary Search			2262	6.60
121	Insertion Sort			1413	7.42
156	Luhn Algorithm	SK		1049	7.94
145	Modular Exponentiation			815	8.38
181	Reverse Polish Notation			625	8.84
122	QuickSort			712	8.61
85	Rotation in 2D Space			777	8.46
40	Paths in the Grid	UA		825	8.35
95	Simple Linear Regression			608	8.88
60	Sweet Harvest			657	8.75
211	Information Entropy			387	9.67
207	Suffix Array			379	9.70
143	Extended Euclidean Algorithm			449	9.41
101	Gradient Calculation			501	9.22
82	Levenshtein Distance			511	9.19
64	Maze Pathfinder			496	9.24
79	Cycles Detection			459	9.37
92	Binary Heap			432	9.48
90	Lexicographic Permutations			388	9.66
78	Bezier Curves			393	9.64
154	Breadth First Search			309	10.06
65	Transitive Closure on Candy States			382	9.69
144	Modular Inverse			282	10.22
155	Depth First Search			269	10.30
161	Topological Sorting			262	10.34
123	Knapsack of Integers			253	10.40
93	Starving Priority Queue			274	10.27
84	Dijkstra in the Network			277	10.25
164	Page Rank			181	10.98
208	Neighborhood of a String			153	11.27
138	Huffman Coding			193	10.87
194	Convex Hull and Farmers			156	11.24
201	Point in Polygon			148	11.33
152	RSA Cryptography			170	11.09
137	Shannon-Fano Coding			178	11.01
374	Longest Common Subsequence			40	13.57
148	Public Key Cryptography Intro			141	11.41
124	Knapsack Backtracking			150	11.31
106	Random Search Optimization			156	11.24
202	Dancing Pairs			112	11.81
102	Travelling Salesman			146	11.35
158	Hamming Codes			119	11.71
153	Fermat goes hacking RSA			105	11.92
115	Gradient Descent for SLE			112	11.81
166	Page Rank as Eigenvector			89	12.21
193	Maximum Flow			80	12.39
142	LZ77 decompression			95	12.09
203	Tic-Tac-Toe Minimax Algorithm			71	12.59
219	Neural Network Calculation			66	12.72
216	Cracking Linear Congruential Generator			64	12.77
132	Stream Cipher Breaking			84	12.31
351	Nicomachus			27	14.23
230	Move-To-Front Transform			54	13.06
205	Clustering the Stars			58	12.94
376	Cartesian Tree Visualization			15	15.21
229	Burrows-Wheeler Transform			36	13.75
349	Burrows		gardengnome	14	15.32
256	Rook Jump Maze			26	14.30
344	Throwing Easter Eggs Part 2		gardengnome	11	15.71
220	Neural Network Training			22	14.58
260	Low Cost Road Network		csfpython	18	14.91
336	Currency Arbitrage			10	15.86
380	Treap Study			6	16.64
345	Elliptic Curves Basics			8	16.21
342	Adaptive Arithmetic Coding			6	16.64
302	Sound-Controlled Robot			6	16.64