Problems

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

Tagged with: c-1 - total 298 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
28	Body Mass Index	DE ES ZH RU SK		10372	3.86
13	Weighted sum of digits	DE ES RU ZH SK		9872	3.95
17	Array Checksum	DE ES RU SK		8662	4.17
48	Collatz Sequence	DE ES RU SK		7044	4.53
12	Modulo and time difference	DE ES RU SK		7149	4.51
18	Square Root	ES RU		5588	4.93
29	Sort with Indexes	RU		5401	4.99
50	Palindromes	DE ES RU SK		4938	5.15
52	Pythagorean Theorem	RU		4733	5.22
67	Fibonacci Sequence	RU		4293	5.39
24	Neumann's Random Generator	DE ES RU		4618	5.27
104	Triangle Area			3366	5.81
35	Savings Calculator			4048	5.49
81	Bit Count	RU		3416	5.79
44	Double Dice Roll	RU		3795	5.61
32	Josephus Problem	RU		3897	5.56
128	Combinations Counting			2673	6.21
19	Matching Brackets	ES RU		3635	5.68
58	Card Names			3243	5.88
49	Rock Paper Scissors			3274	5.86
94	Fool's Day 2014	SK		2771	6.15
59	Bulls and Cows			2864	6.09
61	Prime Numbers Generation	RU		2820	6.12
22	Two Printers	ES RU		3019	6.00
42	Blackjack Counting			2592	6.27
120	Selection Sort			2036	6.69
38	Quadratic Equation			2389	6.41
33	Parity Control	RU		2341	6.45
53	King and Queen			2094	6.64
34	Binary Search			2155	6.59
69	Fibonacci Divisibility			1857	6.85
37	Mortgage Calculator	ZH		2022	6.70
45	Cards Shuffling	ZH		1965	6.75
63	Integer Factorization	ZH		1781	6.92
46	Tic-Tac-Toe	ZH		1826	6.88
62	Prime Ranges			1627	7.08
121	Insertion Sort			1345	7.41
172	Cloud Altitude Measurement			1085	7.78
127	Anagrams			1272	7.50
75	Yacht or Dice Poker			1505	7.21
134	Flying Text Screensaver			1178	7.64
39	Share Price Volatility			1505	7.21
156	Luhn Algorithm	SK		996	7.93
407	River Labyrinth			6	16.54
80	Duel Chances			1134	7.70
135	Variable Length Code			889	8.13
74	Clock Hands			1070	7.80
36	Code Guesser	UA		1165	7.66
105	Convex Polygon Area			917	8.07
408	Mad Beaver in River Labyrinth			2	18.01
54	Pythagorean Triples			1036	7.86
73	Hexagonal Grid			945	8.02
116	Summing Up			813	8.28
97	Girls and Pigs			846	8.21
181	Reverse Polish Notation			584	8.85
385	Number of steps in Euclidean Algorithm		gardengnome	59	12.81
399	Methane Identification		moxieman	23	14.40
122	QuickSort			680	8.59
98	Azimuth at Treasure Island			730	8.47
406	Wormholes of Cygnus		moxieman	6	16.54
85	Rotation in 2D Space			735	8.46
51	Dungeons and Dragons Dice	UA		795	8.32
56	Life is Simple			769	8.38
377	Sum of Digits Divisibility			66	12.62
70	Most Frequent Word			705	8.53
40	Paths in the Grid	UA		767	8.38
66	Caesar Cipher Cracker			706	8.53
88	Pitch and Notes			646	8.68
405	Three Friendly Knights		csfpython	7	16.31
108	Star Medals			595	8.82
211	Information Entropy			366	9.66
95	Simple Linear Regression			581	8.86
87	Tree Builder			591	8.83
207	Suffix Array			364	9.67
60	Sweet Harvest			625	8.74
400	Memory Check			15	15.11
77	Point to Segment Distance			585	8.85
143	Extended Euclidean Algorithm			435	9.37
71	Fibonacci Divisibility Advanced			546	8.97
91	Game of 2048			510	9.09
191	Spaceship Weight Fraud			342	9.78
119	Brain Fibo			455	9.29
101	Gradient Calculation			476	9.21
206	Base-32 Encoding			309	9.96
82	Levenshtein Distance			488	9.17
89	Instrument Tuner			456	9.28
131	Four Pics One Word			386	9.57
64	Maze Pathfinder			473	9.22
189	Dynamic Web Page			300	10.01
79	Cycles Detection			436	9.36
92	Binary Heap			414	9.45
150	Introducing Regexps			329	9.85
126	Sequence of Squares			354	9.72
136	Variable Length Code Unpack			341	9.79
170	Binary Search in Array			291	10.06
167	Copy Line			292	10.06
197	Loops in Assembly			255	10.29
83	Graph Generator			391	9.55
404	Methane Normalization		moxieman	5	16.81
90	Lexicographic Permutations			376	9.62
154	Breadth First Search			294	10.04
78	Bezier Curves			378	9.61
117	Divide by Two			321	9.89
99	Uphill Shooting			334	9.82
65	Transitive Closure on Candy States			362	9.68
144	Modular Inverse			273	10.17
155	Depth First Search			258	10.27
174	Calculation of Pi			236	10.42
161	Topological Sorting			243	10.37
133	Billiard Ball			260	10.26
165	Safe Landing			229	10.48
190	Query String Parameters			202	10.69
140	Proper Bracket Sequences			243	10.37
384	Equal Hamming Distance		csfpython	21	14.55
76	Pawn Move Validator			291	10.06
96	Snake Arcade			272	10.18
323	Next Palindrome		csfpython	74	12.42
123	Knapsack of Integers			239	10.40
93	Starving Priority Queue			262	10.24
130	Combinations with Repetitions			228	10.48
84	Dijkstra in the Network			265	10.22
173	Chords of Music			192	10.78
125	Bogosort			231	10.46
360	Whisky Blending		csfpython	39	13.52
381	Finding Squares		csfpython	21	14.55
337	Introducing Zeckendorf		csfpython	55	12.93
372	String Minimization			27	14.13
146	Color Cubes			198	10.73
151	Word Ladders			190	10.80
208	Neighborhood of a String			145	11.27
402	Game of Stones		csfpython	4	17.13
129	Enumerating Combinations			197	10.74
164	Page Rank			172	10.97
138	Huffman Coding			186	10.84
194	Convex Hull and Farmers			147	11.24
390	Card Pairing Solitaire			12	15.47
139	Beam Balance and Masses			182	10.87
201	Point in Polygon			138	11.35
199	Employees Web App			139	11.34
359	Find 3 Numbers		csfpython	31	13.90
192	Gangster Battles			136	11.38
152	RSA Cryptography			161	11.09
393	Urban Planning		csfpython	9	15.92
137	Shannon-Fano Coding			169	11.00
111	Necklace Count			176	10.93
110	Lucky Tickets Advanced			166	11.03
168	Caesar meets BF			133	11.42
398	Collecting Diamonds		csfpython	5	16.81
269	Fibonacci coding			73	12.45
202	Dancing Pairs			108	11.77
179	Look and Say binary			119	11.61
198	Prn Hex Str			109	11.76
162	Rubik's Cube			126	11.51
148	Public Key Cryptography Intro			133	11.42
124	Knapsack Backtracking			142	11.30
182	Frodo and Black Riders			112	11.71
106	Random Search Optimization			149	11.22
253	Beautiful Line Chart			75	12.40
177	Nim Game			112	11.71
185	Simple 3D Scene			106	11.81
160	Social Web Scraper			117	11.64
392	Fixing an Anagram			7	16.31
102	Travelling Salesman			139	11.34
157	Emirp primE			113	11.70
158	Hamming Codes			111	11.73
258	Text Justification			65	12.65
395	Growth of Micro-Organisms		csfpython	5	16.81
291	Squirrels vs. Acorns		zelevin	49	13.13
159	Hard Life			103	11.86
281	Basic Tokenizer			51	13.06
196	Fibonacci Randomizer			85	12.19
277	The Adventure of Morse Code		zelevin	52	13.03
379	Dice with Infinity Sides		telebashna	11	15.61
153	Fermat goes hacking RSA			99	11.92
351	Nicomachus			21	14.55
100	Crossing the Road			115	11.67
115	Gradient Descent for SLE			109	11.76
186	Simple 3D Scene (cont)			82	12.25
141	Sliding Window Search			97	11.96
335	Venus Visible			26	14.20
376	Cartesian Tree Visualization			11	15.61
210	Ticket Puzzle			69	12.54
209	Suffix Array Advanced			69	12.54
383	E2C2S - try harder!		gardengnome	8	16.11
166	Page Rank as Eigenvector			83	12.23
193	Maximum Flow			73	12.45
142	LZ77 decompression			89	12.11
203	Tic-Tac-Toe Minimax Algorithm			68	12.57
397	Trading Bot			3	17.52
219	Neural Network Calculation			61	12.75
112	Travelling Salesman Inverted			92	12.05
216	Cracking Linear Congruential Generator			59	12.81
363	Language Detector			13	15.34
113	Ground Zero			89	12.11
274	Two Buckets			40	13.47
382	Die Throw Sequences		csfpython	7	16.31
334	Find all of the SETs		csfpython	21	14.55
132	Stream Cipher Breaking			80	12.29
163	Colliding Balls			70	12.52
175	Algae Robot			66	12.62
367	Roguelike 1d			11	15.61
205	Clustering the Stars			56	12.90
200	Fizz Buzz in Asm			57	12.87
354	Too Many Divisors		csfpython	14	15.22
107	Knight's Tour			81	12.27
230	Move-To-Front Transform			47	13.20
204	Wandering Star			53	12.99
212	BCD to Hex			50	13.09
347	Unwanted Multiples		csfpython	15	15.11
241	Village Ways			42	13.39
257	Missing Records in SQL			36	13.65
218	Rain Must Fall	DE		45	13.27
358	Mandelbrot Set			11	15.61
307	The Problem of Too Many Clues		zelevin	23	14.40
149	Prime Chains			60	12.78
396	Chocolate Triangles and BF		moxieman	2	18.01
357	Ulam's Prime Spiral			11	15.61
361	Rogue Mazes			10	15.76
233	Language Study			39	13.52
378	Space Invaders Automation			6	16.54
338	Throwing Easter Eggs		gardengnome	15	15.11
391	Scout Proficiency Badges		csfpython	3	17.52
349	Burrows		gardengnome	12	15.47
178	Maze of the Wumpus			49	13.13
147	Color Cubes Advanced			55	12.93
362	Euclid, Manhattan and Chebyshev			9	15.92
380	Treap Study			5	16.81
118	Maxit Single-Player			59	12.81
180	Simple Game of Sticks			46	13.24
223	Introducing Scheme			37	13.60
299	Tree Visualizer			20	14.63
229	Burrows-Wheeler Transform			33	13.80
340	Zeckendorf Lite		csfpython	12	15.47
255	LCM of a range			28	14.07
183	Connect Four			41	13.43
339	Parking Lot			12	15.47
247	Towers of Hanoi			29	14.01
344	Throwing Easter Eggs Part 2		gardengnome	10	15.76
270	Hexlife			22	14.48
341	Zeckendorf Advanced		csfpython	10	15.76
284	Rotate Array In-Place			19	14.72
217	Personality Swap			29	14.01
286	Self-Printing Program			18	14.81
238	Bear Hunt			25	14.26
234	Train Merge			25	14.26
268	Logic Transformation			19	14.72
275	Three Buckets			18	14.81
169	Automated Landing			33	13.80
285	Rotate Matrix In Place			16	15.00
243	Grille Encryption			21	14.55
256	Rook Jump Maze			19	14.72
271	A Knight some Trolls and a Princess		csfpython	17	14.90
213	Micro-Life	SK		24	14.33
306	Line Drawing Algorithm			12	15.47
369	Flappy Bird			4	17.13
345	Elliptic Curves Basics			7	16.31
336	Currency Arbitrage			8	16.11
333	Happy Triplets			8	16.11
220	Neural Network Training			21	14.55
260	Low Cost Road Network		csfpython	16	15.00
365	Flower Border Arrangements		csfpython	4	17.13
373	Railroad Rat		csfpython	3	17.52
263	Easter Bunnies 3D		gardengnome	15	15.11
262	Easter Bunnies 2D Advanced		gardengnome	15	15.11
266	Pancake Sorting			14	15.22
370	Jewels			3	17.52
279	Two Buckets Advanced		csfpython	12	15.47
328	Beep Beep Beep			7	16.31
254	Rule 30 by Turing			14	15.22
221	XWords		quandray	17	14.90
355	Robots Game			4	17.13
222	Easter Eggs Advanced			16	15.00
342	Adaptive Arithmetic Coding			5	16.81
308	Circle Drawing Algorithm			8	16.11
235	Train Merge Advanced			14	15.22
356	Robots Game Autoplay			3	17.52
327	Dobbin's Long Journey		csfpython	5	16.81
215	Klotski	SK		13	15.34
267	Turing Maze			9	15.92
237	Road Network Destruction			11	15.61
264	Party Presents		csfpython	9	15.92
227	Hashtable Implementation			11	15.61
226	Multiplicative Persistence Backtrace			11	15.61
302	Sound-Controlled Robot			6	16.54
225	Hamurabi			11	15.61
248	Christmas Puzzle			9	15.92
224	Transposing List of Lists			10	15.76
252	Shadok and Gibis			8	16.11
317	Launch to Orbit			4	17.13
236	Is the Earth Flat			8	16.11
273	Logic Glitches			6	16.54
251	Radio Spies			7	16.31
348	Trick-Taking Game			2	18.01
232	Shift Register Randomizer			7	16.31
240	Playfair Cipher Cracking			6	16.54
280	Three Buckets Re-visited		csfpython	4	17.13
228	Maze Mapping Robot			5	16.81
318	Launch to Orbit automated			2	18.01