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 326 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
28	Body Mass Index	DE ES ZH RU SK		10632	3.87
13	Weighted sum of digits	DE ES RU ZH SK		10134	3.95
17	Array Checksum	DE ES RU SK		8886	4.18
48	Collatz Sequence	DE ES RU SK		7221	4.54
12	Modulo and time difference	DE ES RU SK		7353	4.51
18	Square Root	ES RU		5760	4.93
29	Sort with Indexes	RU		5536	5.00
50	Palindromes	DE ES RU SK		5077	5.15
52	Pythagorean Theorem	RU		4867	5.23
67	Fibonacci Sequence	RU		4389	5.41
24	Neumann's Random Generator	DE ES RU		4744	5.27
35	Savings Calculator			4164	5.50
104	Triangle Area	ES		3455	5.82
44	Double Dice Roll	RU		3901	5.61
32	Josephus Problem	RU		4004	5.57
81	Bit Count	RU		3498	5.80
19	Matching Brackets	ES RU		3748	5.68
128	Combinations Counting			2743	6.22
58	Card Names			3329	5.89
49	Rock Paper Scissors			3360	5.87
94	Fool's Day 2014	SK		2838	6.16
59	Bulls and Cows			2942	6.10
61	Prime Numbers Generation	RU		2899	6.13
22	Two Printers	ES RU		3120	6.00
42	Blackjack Counting			2674	6.27
120	Selection Sort			2095	6.69
38	Quadratic Equation			2464	6.41
33	Parity Control	RU		2425	6.44
53	King and Queen			2162	6.64
34	Binary Search			2230	6.58
37	Mortgage Calculator	ZH		2092	6.69
45	Cards Shuffling	ZH		2039	6.74
69	Fibonacci Divisibility			1909	6.85
63	Integer Factorization	ZH		1826	6.93
46	Tic-Tac-Toe	ZH		1883	6.88
62	Prime Ranges			1668	7.09
121	Insertion Sort			1389	7.40
75	Yacht or Dice Poker			1549	7.22
172	Cloud Altitude Measurement			1129	7.76
127	Anagrams			1301	7.52
134	Flying Text Screensaver			1204	7.65
39	Share Price Volatility			1557	7.21
156	Luhn Algorithm	SK		1028	7.93
444	White Rectangle			15	15.16
80	Duel Chances			1166	7.71
135	Variable Length Code			924	8.11
36	Code Guesser	UA		1213	7.64
74	Clock Hands			1100	7.81
105	Convex Polygon Area			951	8.06
54	Pythagorean Triples			1071	7.86
446	Hangman			7	16.36
73	Hexagonal Grid			972	8.02
116	Summing Up			830	8.30
97	Girls and Pigs			869	8.22
181	Reverse Polish Notation			612	8.83
122	QuickSort			703	8.59
98	Azimuth at Treasure Island			754	8.46
85	Rotation in 2D Space			760	8.45
51	Dungeons and Dragons Dice	UA		821	8.32
56	Life is Simple			795	8.37
40	Paths in the Grid	UA		811	8.34
70	Most Frequent Word			726	8.53
66	Caesar Cipher Cracker			726	8.53
88	Pitch and Notes			672	8.66
108	Star Medals			608	8.84
87	Tree Builder			614	8.82
95	Simple Linear Regression			600	8.86
60	Sweet Harvest			651	8.72
77	Point to Segment Distance			609	8.84
211	Information Entropy			385	9.63
207	Suffix Array			377	9.67
445	Formula 1			5	16.86
91	Game of 2048			535	9.06
71	Fibonacci Divisibility Advanced			561	8.98
143	Extended Euclidean Algorithm			442	9.39
101	Gradient Calculation			496	9.19
119	Brain Fibo			461	9.32
191	Spaceship Weight Fraud			355	9.77
82	Levenshtein Distance			505	9.16
206	Base-32 Encoding			321	9.95
89	Instrument Tuner			472	9.28
433	A Crime on Logic Island		csfpython	20	14.69
64	Maze Pathfinder			491	9.21
131	Four Pics One Word			394	9.59
79	Cycles Detection			451	9.36
92	Binary Heap			424	9.46
385	Number of steps in Euclidean Algorithm		gardengnome	74	12.48
189	Dynamic Web Page			302	10.05
83	Graph Generator			410	9.52
136	Variable Length Code Unpack			350	9.80
150	Introducing Regexps			334	9.88
126	Sequence of Squares			359	9.75
377	Sum of Digits Divisibility			79	12.36
90	Lexicographic Permutations			385	9.63
170	Binary Search in Array			297	10.08
167	Copy Line			298	10.07
78	Bezier Curves			391	9.60
197	Loops in Assembly			262	10.30
154	Breadth First Search			304	10.04
440	Mud Walker			8	16.16
117	Divide by Two			327	9.91
65	Transitive Closure on Candy States			377	9.67
99	Uphill Shooting			342	9.84
144	Modular Inverse			279	10.19
155	Depth First Search			266	10.27
161	Topological Sorting			255	10.34
174	Calculation of Pi			243	10.43
442	Chomp			5	16.86
133	Billiard Ball			269	10.25
165	Safe Landing			239	10.46
140	Proper Bracket Sequences			256	10.34
76	Pawn Move Validator			305	10.03
96	Snake Arcade			283	10.16
434	A Crime on Logic Island Advanced		csfpython	11	15.66
190	Query String Parameters			204	10.73
435	Maze Mapping API-Robot			10	15.81
123	Knapsack of Integers			251	10.37
93	Starving Priority Queue			271	10.24
84	Dijkstra in the Network			274	10.22
130	Combinations with Repetitions			234	10.49
125	Bogosort			235	10.48
173	Chords of Music			198	10.78
323	Next Palindrome		csfpython	87	12.20
399	Methane Identification		moxieman	33	13.85
146	Color Cubes			203	10.74
151	Word Ladders			196	10.80
360	Whisky Blending		csfpython	57	12.92
427	Cheapest Bus Tickets			13	15.39
208	Neighborhood of a String			152	11.24
129	Enumerating Combinations			201	10.76
164	Page Rank			177	10.97
138	Huffman Coding			189	10.86
139	Beam Balance and Masses			188	10.87
194	Convex Hull and Farmers			149	11.27
201	Point in Polygon			143	11.34
199	Employees Web App			141	11.37
337	Introducing Zeckendorf		csfpython	62	12.78
137	Shannon-Fano Coding			174	11.00
152	RSA Cryptography			165	11.10
411	Elo Ratings		moxieman	20	14.69
192	Gangster Battles			140	11.38
111	Necklace Count			180	10.95
110	Lucky Tickets Advanced			170	11.04
168	Caesar meets BF			137	11.42
253	Beautiful Line Chart			94	12.07
432	Ball Bearing Collisions		csfpython	7	16.36
269	Fibonacci coding			83	12.28
148	Public Key Cryptography Intro			139	11.39
423	Russian Dolls		csfpython	11	15.66
124	Knapsack Backtracking			148	11.28
162	Rubik's Cube			130	11.51
202	Dancing Pairs			111	11.78
179	Look and Say binary			121	11.63
106	Random Search Optimization			153	11.23
198	Prn Hex Str			110	11.80
372	String Minimization			33	13.85
182	Frodo and Black Riders			115	11.72
359	Find 3 Numbers		csfpython	38	13.61
177	Nim Game			113	11.75
160	Social Web Scraper			119	11.66
185	Simple 3D Scene			108	11.83
102	Travelling Salesman			142	11.36
439	Power Sum of Digits		csfpython	3	17.57
158	Hamming Codes			115	11.72
157	Emirp primE			115	11.72
421	Princess and Tiger			10	15.81
400	Memory Check			18	14.86
420	Life on a String		csfpython	10	15.81
384	Equal Hamming Distance		csfpython	23	14.46
159	Hard Life			106	11.86
258	Text Justification			68	12.62
407	River Labyrinth			14	15.27
426	Weighted Sum of Digits 2		csfpython	7	16.36
196	Fibonacci Randomizer			86	12.22
153	Fermat goes hacking RSA			100	11.96
381	Finding Squares		csfpython	22	14.53
277	The Adventure of Morse Code		zelevin	57	12.92
291	Squirrels vs. Acorns		zelevin	52	13.08
115	Gradient Descent for SLE			111	11.78
100	Crossing the Road			116	11.70
281	Basic Tokenizer			55	12.98
141	Sliding Window Search			100	11.96
186	Simple 3D Scene (cont)			84	12.26
193	Maximum Flow			78	12.39
166	Page Rank as Eigenvector			86	12.22
142	LZ77 decompression			92	12.10
209	Suffix Array Advanced			71	12.55
412	Json Fix			10	15.81
210	Ticket Puzzle			70	12.57
203	Tic-Tac-Toe Minimax Algorithm			70	12.57
219	Neural Network Calculation			65	12.70
113	Ground Zero			94	12.07
112	Travelling Salesman Inverted			94	12.07
406	Wormholes of Cygnus		moxieman	11	15.66
351	Nicomachus			26	14.25
216	Cracking Linear Congruential Generator			63	12.75
390	Card Pairing Solitaire			15	15.16
274	Two Buckets			45	13.33
132	Stream Cipher Breaking			82	12.30
163	Colliding Balls			72	12.52
335	Venus Visible			28	14.13
409	Election Fever		csfpython	9	15.98
405	Three Friendly Knights		csfpython	10	15.81
175	Algae Robot			67	12.65
107	Knight's Tour			82	12.30
205	Clustering the Stars			58	12.89
241	Village Ways			48	13.22
200	Fizz Buzz in Asm			57	12.92
230	Move-To-Front Transform			50	13.15
204	Wandering Star			55	12.98
334	Find all of the SETs		csfpython	25	14.32
408	Mad Beaver in River Labyrinth			8	16.16
218	Rain Must Fall	DE		49	13.18
212	BCD to Hex			50	13.15
430	Cutting Paper		csfpython	3	17.57
257	Missing Records in SQL			39	13.57
149	Prime Chains			61	12.81
376	Cartesian Tree Visualization			14	15.27
379	Dice with Infinity Sides		telebashna	13	15.39
233	Language Study			42	13.44
393	Urban Planning		csfpython	10	15.81
413	Tree Painting		csfpython	6	16.60
147	Color Cubes Advanced			57	12.92
178	Maze of the Wumpus			51	13.11
307	The Problem of Too Many Clues		zelevin	26	14.25
417	Unfortunate Bubble Sort		gardengnome	5	16.86
118	Maxit Single-Player			61	12.81
180	Simple Game of Sticks			48	13.22
416	Socket Server		testuser	5	16.86
223	Introducing Scheme			40	13.53
415	Smallest Message		gardengnome	5	16.86
347	Unwanted Multiples		csfpython	17	14.96
398	Collecting Diamonds		csfpython	8	16.16
392	Fixing an Anagram			9	15.98
338	Throwing Easter Eggs		gardengnome	18	14.86
255	LCM of a range			32	13.90
354	Too Many Divisors		csfpython	15	15.16
229	Burrows-Wheeler Transform			36	13.70
395	Growth of Micro-Organisms		csfpython	8	16.16
299	Tree Visualizer			24	14.38
382	Die Throw Sequences		csfpython	10	15.81
363	Language Detector			13	15.39
183	Connect Four			42	13.44
367	Roguelike 1d			12	15.52
247	Towers of Hanoi			31	13.96
349	Burrows		gardengnome	14	15.27
402	Game of Stones		csfpython	6	16.60
340	Zeckendorf Lite		csfpython	15	15.16
284	Rotate Array In-Place			23	14.46
339	Parking Lot			15	15.16
270	Hexlife			25	14.32
358	Mandelbrot Set			12	15.52
357	Ulam's Prime Spiral			12	15.52
217	Personality Swap			31	13.96
238	Bear Hunt			28	14.13
383	E2C2S - try harder!		gardengnome	8	16.16
256	Rook Jump Maze			25	14.32
419	Special Digits		csfpython	3	17.57
404	Methane Normalization		moxieman	5	16.86
243	Grille Encryption			26	14.25
234	Train Merge			27	14.19
286	Self-Printing Program			20	14.69
169	Automated Landing			35	13.75
362	Euclid, Manhattan and Chebyshev			10	15.81
361	Rogue Mazes			10	15.81
271	A Knight some Trolls and a Princess		csfpython	21	14.61
285	Rotate Matrix In Place			19	14.77
268	Logic Transformation			21	14.61
424	New Towers of Hanoi		csfpython	2	18.07
275	Three Buckets			19	14.77
344	Throwing Easter Eggs Part 2		gardengnome	11	15.66
422	Mabinogion Sheep		moxieman	2	18.07
213	Micro-Life	SK		24	14.38
410	Village Door Shuffle		csfpython	3	17.57
341	Zeckendorf Advanced		csfpython	10	15.81
380	Treap Study			6	16.60
220	Neural Network Training			22	14.53
378	Space Invaders Automation			6	16.60
336	Currency Arbitrage			10	15.81
262	Easter Bunnies 2D Advanced		gardengnome	16	15.05
306	Line Drawing Algorithm			12	15.52
260	Low Cost Road Network		csfpython	16	15.05
222	Easter Eggs Advanced			19	14.77
221	XWords		quandray	19	14.77
254	Rule 30 by Turing			16	15.05
263	Easter Bunnies 3D		gardengnome	15	15.16
365	Flower Border Arrangements		csfpython	6	16.60
266	Pancake Sorting			14	15.27
295	Vigenere Cipher Cracker			11	15.66
333	Happy Triplets			8	16.16
397	Trading Bot			3	17.57
345	Elliptic Curves Basics			7	16.36
279	Two Buckets Advanced		csfpython	12	15.52
396	Chocolate Triangles and BF		moxieman	3	17.57
235	Train Merge Advanced			15	15.16
391	Scout Proficiency Badges		csfpython	3	17.57
328	Beep Beep Beep			7	16.36
237	Road Network Destruction			13	15.39
267	Turing Maze			11	15.66
308	Circle Drawing Algorithm			8	16.16
227	Hashtable Implementation			13	15.39
369	Flappy Bird			4	17.18
215	Klotski	SK		13	15.39
225	Hamurabi			12	15.52
327	Dobbin's Long Journey		csfpython	6	16.60
342	Adaptive Arithmetic Coding			5	16.86
252	Shadok and Gibis			10	15.81
264	Party Presents		csfpython	9	15.98
226	Multiplicative Persistence Backtrace			11	15.66
224	Transposing List of Lists			11	15.66
355	Robots Game			4	17.18
373	Railroad Rat		csfpython	3	17.57
370	Jewels			3	17.57
248	Christmas Puzzle			9	15.98
302	Sound-Controlled Robot			6	16.60
251	Radio Spies			8	16.16
356	Robots Game Autoplay			3	17.57
236	Is the Earth Flat			8	16.16
280	Three Buckets Re-visited		csfpython	6	16.60
273	Logic Glitches			6	16.60
348	Trick-Taking Game			3	17.57
240	Playfair Cipher Cracking			7	16.36
317	Launch to Orbit			4	17.18
232	Shift Register Randomizer			7	16.36
228	Maze Mapping Robot			6	16.60
318	Launch to Orbit automated			2	18.07