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 332 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
28	Body Mass Index	DE ES ZH RU SK		10672	3.88
13	Weighted sum of digits	DE ES RU ZH SK		10169	3.96
17	Array Checksum	DE ES RU SK		8919	4.19
48	Collatz Sequence	DE ES RU SK		7249	4.55
12	Modulo and time difference	DE ES RU SK		7377	4.52
18	Square Root	ES RU		5791	4.94
29	Sort with Indexes	RU		5560	5.01
50	Palindromes	DE ES RU SK		5102	5.16
52	Pythagorean Theorem	RU		4894	5.23
67	Fibonacci Sequence	RU		4408	5.41
24	Neumann's Random Generator	DE ES RU		4768	5.27
35	Savings Calculator			4184	5.50
104	Triangle Area	ES		3476	5.82
44	Double Dice Roll	RU		3922	5.61
32	Josephus Problem	RU		4024	5.57
81	Bit Count	RU		3515	5.80
19	Matching Brackets	ES RU		3771	5.68
128	Combinations Counting			2761	6.22
58	Card Names			3344	5.89
49	Rock Paper Scissors			3377	5.87
94	Fool's Day 2014	SK		2856	6.16
59	Bulls and Cows			2957	6.10
61	Prime Numbers Generation	RU		2914	6.13
22	Two Printers	ES RU		3142	6.00
42	Blackjack Counting			2693	6.27
120	Selection Sort			2110	6.69
38	Quadratic Equation			2479	6.41
33	Parity Control	RU		2437	6.44
53	King and Queen			2176	6.64
34	Binary Search			2244	6.58
37	Mortgage Calculator	ZH		2106	6.69
45	Cards Shuffling	ZH		2056	6.74
69	Fibonacci Divisibility			1923	6.85
63	Integer Factorization	ZH		1840	6.93
46	Tic-Tac-Toe	ZH		1897	6.88
62	Prime Ranges			1679	7.09
121	Insertion Sort			1402	7.40
75	Yacht or Dice Poker			1561	7.21
172	Cloud Altitude Measurement			1143	7.75
127	Anagrams			1307	7.52
39	Share Price Volatility			1569	7.20
134	Flying Text Screensaver			1208	7.66
156	Luhn Algorithm	SK		1038	7.92
80	Duel Chances			1176	7.71
36	Code Guesser	UA		1225	7.63
135	Variable Length Code			932	8.11
74	Clock Hands			1105	7.81
105	Convex Polygon Area			959	8.06
54	Pythagorean Triples			1075	7.86
73	Hexagonal Grid			984	8.01
116	Summing Up			833	8.30
97	Girls and Pigs			874	8.22
181	Reverse Polish Notation			614	8.83
98	Azimuth at Treasure Island			762	8.46
122	QuickSort			705	8.59
85	Rotation in 2D Space			770	8.44
51	Dungeons and Dragons Dice	UA		825	8.32
56	Life is Simple			799	8.38
40	Paths in the Grid	UA		822	8.33
70	Most Frequent Word			729	8.54
66	Caesar Cipher Cracker			729	8.54
88	Pitch and Notes			675	8.67
108	Star Medals			610	8.84
87	Tree Builder			617	8.82
95	Simple Linear Regression			602	8.87
60	Sweet Harvest			655	8.72
77	Point to Segment Distance			610	8.84
211	Information Entropy			387	9.63
207	Suffix Array			378	9.67
91	Game of 2048			539	9.06
71	Fibonacci Divisibility Advanced			566	8.97
143	Extended Euclidean Algorithm			447	9.38
101	Gradient Calculation			498	9.20
444	White Rectangle			17	14.97
119	Brain Fibo			463	9.32
82	Levenshtein Distance			506	9.17
191	Spaceship Weight Fraud			358	9.77
206	Base-32 Encoding			324	9.94
89	Instrument Tuner			473	9.29
64	Maze Pathfinder			494	9.21
131	Four Pics One Word			396	9.59
79	Cycles Detection			457	9.35
92	Binary Heap			427	9.46
189	Dynamic Web Page			302	10.06
83	Graph Generator			412	9.52
136	Variable Length Code Unpack			352	9.80
385	Number of steps in Euclidean Algorithm		gardengnome	78	12.40
150	Introducing Regexps			334	9.89
126	Sequence of Squares			360	9.76
90	Lexicographic Permutations			387	9.63
170	Binary Search in Array			298	10.09
167	Copy Line			301	10.07
78	Bezier Curves			392	9.61
377	Sum of Digits Divisibility			81	12.33
197	Loops in Assembly			264	10.30
154	Breadth First Search			305	10.05
456	Every Third Bit			-	19.99
65	Transitive Closure on Candy States			380	9.66
117	Divide by Two			328	9.92
99	Uphill Shooting			343	9.84
144	Modular Inverse			280	10.19
155	Depth First Search			267	10.28
161	Topological Sorting			259	10.33
449	Space Pirates		csfpython	6	16.61
433	A Crime on Logic Island		csfpython	20	14.70
174	Calculation of Pi			245	10.42
133	Billiard Ball			271	10.25
165	Safe Landing			241	10.45
140	Proper Bracket Sequences			259	10.33
446	Hangman			8	16.17
76	Pawn Move Validator			310	10.02
96	Snake Arcade			284	10.17
190	Query String Parameters			204	10.74
123	Knapsack of Integers			252	10.38
93	Starving Priority Queue			273	10.24
84	Dijkstra in the Network			276	10.22
130	Combinations with Repetitions			238	10.47
125	Bogosort			237	10.48
173	Chords of Music			199	10.78
323	Next Palindrome		csfpython	89	12.17
454	Multiplexer 4x4			1	18.78
146	Color Cubes			203	10.75
151	Word Ladders			196	10.81
129	Enumerating Combinations			202	10.76
360	Whisky Blending		csfpython	59	12.88
208	Neighborhood of a String			152	11.25
164	Page Rank			179	10.97
399	Methane Identification		moxieman	34	13.81
138	Huffman Coding			190	10.86
139	Beam Balance and Masses			189	10.87
194	Convex Hull and Farmers			151	11.26
201	Point in Polygon			146	11.32
450	Bead Games		csfpython	3	17.58
199	Employees Web App			141	11.38
137	Shannon-Fano Coding			175	11.01
435	Maze Mapping API-Robot			11	15.67
152	RSA Cryptography			165	11.11
192	Gangster Battles			141	11.38
337	Introducing Zeckendorf		csfpython	63	12.76
440	Mud Walker			8	16.17
111	Necklace Count			180	10.96
434	A Crime on Logic Island Advanced		csfpython	11	15.67
455	D flip-flop			-	19.99
451	Maximize Toy Production		csfpython	2	18.08
445	Formula 1			5	16.88
110	Lucky Tickets Advanced			171	11.05
411	Elo Ratings		moxieman	21	14.62
168	Caesar meets BF			137	11.43
253	Beautiful Line Chart			95	12.06
427	Cheapest Bus Tickets			13	15.40
148	Public Key Cryptography Intro			139	11.40
124	Knapsack Backtracking			148	11.30
269	Fibonacci coding			83	12.29
162	Rubik's Cube			130	11.52
202	Dancing Pairs			112	11.78
179	Look and Say binary			122	11.63
106	Random Search Optimization			154	11.23
198	Prn Hex Str			111	11.79
182	Frodo and Black Riders			117	11.70
177	Nim Game			114	11.75
102	Travelling Salesman			144	11.34
160	Social Web Scraper			119	11.67
185	Simple 3D Scene			108	11.84
442	Chomp			5	16.88
372	String Minimization			33	13.86
359	Find 3 Numbers		csfpython	38	13.62
158	Hamming Codes			117	11.70
157	Emirp primE			115	11.73
159	Hard Life			106	11.87
423	Russian Dolls		csfpython	11	15.67
258	Text Justification			69	12.61
400	Memory Check			19	14.78
196	Fibonacci Randomizer			87	12.21
153	Fermat goes hacking RSA			100	11.97
100	Crossing the Road			117	11.70
384	Equal Hamming Distance		csfpython	23	14.47
115	Gradient Descent for SLE			111	11.79
277	The Adventure of Morse Code		zelevin	57	12.93
432	Ball Bearing Collisions		csfpython	7	16.38
407	River Labyrinth			15	15.17
141	Sliding Window Search			100	11.97
291	Squirrels vs. Acorns		zelevin	52	13.09
281	Basic Tokenizer			55	13.00
186	Simple 3D Scene (cont)			84	12.27
193	Maximum Flow			80	12.35
166	Page Rank as Eigenvector			88	12.19
421	Princess and Tiger			10	15.82
381	Finding Squares		csfpython	22	14.54
142	LZ77 decompression			93	12.10
420	Life on a String		csfpython	10	15.82
209	Suffix Array Advanced			72	12.54
210	Ticket Puzzle			70	12.58
203	Tic-Tac-Toe Minimax Algorithm			70	12.58
113	Ground Zero			95	12.06
439	Power Sum of Digits		csfpython	4	17.19
219	Neural Network Calculation			65	12.71
112	Travelling Salesman Inverted			94	12.08
216	Cracking Linear Congruential Generator			63	12.76
351	Nicomachus			27	14.20
426	Weighted Sum of Digits 2		csfpython	7	16.38
274	Two Buckets			46	13.30
132	Stream Cipher Breaking			82	12.31
163	Colliding Balls			72	12.54
412	Json Fix			10	15.82
175	Algae Robot			67	12.66
107	Knight's Tour			83	12.29
390	Card Pairing Solitaire			15	15.17
335	Venus Visible			28	14.14
406	Wormholes of Cygnus		moxieman	11	15.67
205	Clustering the Stars			58	12.91
230	Move-To-Front Transform			52	13.09
241	Village Ways			49	13.19
200	Fizz Buzz in Asm			58	12.91
204	Wandering Star			55	13.00
334	Find all of the SETs		csfpython	26	14.26
218	Rain Must Fall	DE		50	13.16
212	BCD to Hex			51	13.12
405	Three Friendly Knights		csfpython	10	15.82
409	Election Fever		csfpython	9	15.99
149	Prime Chains			61	12.82
257	Missing Records in SQL			39	13.58
376	Cartesian Tree Visualization			15	15.17
233	Language Study			43	13.41
178	Maze of the Wumpus			52	13.09
147	Color Cubes Advanced			57	12.93
307	The Problem of Too Many Clues		zelevin	27	14.20
408	Mad Beaver in River Labyrinth			8	16.17
118	Maxit Single-Player			61	12.82
379	Dice with Infinity Sides		telebashna	13	15.40
180	Simple Game of Sticks			48	13.23
223	Introducing Scheme			40	13.54
393	Urban Planning		csfpython	10	15.82
416	Socket Server		testuser	6	16.61
338	Throwing Easter Eggs		gardengnome	19	14.78
299	Tree Visualizer			25	14.33
347	Unwanted Multiples		csfpython	17	14.97
255	LCM of a range			32	13.91
229	Burrows-Wheeler Transform			36	13.72
183	Connect Four			43	13.41
413	Tree Painting		csfpython	6	16.61
247	Towers of Hanoi			32	13.91
354	Too Many Divisors		csfpython	15	15.17
392	Fixing an Anagram			9	15.99
398	Collecting Diamonds		csfpython	8	16.17
417	Unfortunate Bubble Sort		gardengnome	5	16.88
270	Hexlife			27	14.20
363	Language Detector			13	15.40
430	Cutting Paper		csfpython	3	17.58
382	Die Throw Sequences		csfpython	10	15.82
402	Game of Stones		csfpython	7	16.38
395	Growth of Micro-Organisms		csfpython	8	16.17
367	Roguelike 1d			12	15.53
339	Parking Lot			16	15.07
415	Smallest Message		gardengnome	5	16.88
349	Burrows		gardengnome	14	15.28
284	Rotate Array In-Place			23	14.47
238	Bear Hunt			29	14.08
340	Zeckendorf Lite		csfpython	15	15.17
256	Rook Jump Maze			26	14.26
217	Personality Swap			31	13.97
419	Special Digits		csfpython	4	17.19
358	Mandelbrot Set			12	15.53
243	Grille Encryption			27	14.20
234	Train Merge			28	14.14
357	Ulam's Prime Spiral			12	15.53
286	Self-Printing Program			21	14.62
362	Euclid, Manhattan and Chebyshev			11	15.67
169	Automated Landing			35	13.76
383	E2C2S - try harder!		gardengnome	8	16.17
271	A Knight some Trolls and a Princess		csfpython	21	14.62
268	Logic Transformation			21	14.62
285	Rotate Matrix In Place			19	14.78
361	Rogue Mazes			10	15.82
404	Methane Normalization		moxieman	5	16.88
275	Three Buckets			19	14.78
344	Throwing Easter Eggs Part 2		gardengnome	11	15.67
213	Micro-Life	SK		24	14.40
220	Neural Network Training			22	14.54
260	Low Cost Road Network		csfpython	18	14.87
341	Zeckendorf Advanced		csfpython	10	15.82
424	New Towers of Hanoi		csfpython	2	18.08
380	Treap Study			6	16.61
336	Currency Arbitrage			10	15.82
378	Space Invaders Automation			6	16.61
262	Easter Bunnies 2D Advanced		gardengnome	16	15.07
365	Flower Border Arrangements		csfpython	7	16.38
295	Vigenere Cipher Cracker			13	15.40
306	Line Drawing Algorithm			12	15.53
422	Mabinogion Sheep		moxieman	2	18.08
222	Easter Eggs Advanced			19	14.78
410	Village Door Shuffle		csfpython	3	17.58
221	XWords		quandray	19	14.78
254	Rule 30 by Turing			16	15.07
263	Easter Bunnies 3D		gardengnome	15	15.17
266	Pancake Sorting			14	15.28
391	Scout Proficiency Badges		csfpython	4	17.19
279	Two Buckets Advanced		csfpython	12	15.53
333	Happy Triplets			8	16.17
235	Train Merge Advanced			15	15.17
345	Elliptic Curves Basics			7	16.38
327	Dobbin's Long Journey		csfpython	8	16.17
397	Trading Bot			3	17.58
396	Chocolate Triangles and BF		moxieman	3	17.58
237	Road Network Destruction			13	15.40
267	Turing Maze			11	15.67
328	Beep Beep Beep			7	16.38
227	Hashtable Implementation			13	15.40
342	Adaptive Arithmetic Coding			6	16.61
308	Circle Drawing Algorithm			8	16.17
252	Shadok and Gibis			11	15.67
215	Klotski	SK		13	15.40
370	Jewels			4	17.19
264	Party Presents		csfpython	10	15.82
369	Flappy Bird			4	17.19
225	Hamurabi			12	15.53
226	Multiplicative Persistence Backtrace			11	15.67
224	Transposing List of Lists			11	15.67
355	Robots Game			4	17.19
248	Christmas Puzzle			9	15.99
373	Railroad Rat		csfpython	3	17.58
280	Three Buckets Re-visited		csfpython	7	16.38
302	Sound-Controlled Robot			6	16.61
232	Shift Register Randomizer			9	15.99
251	Radio Spies			8	16.17
236	Is the Earth Flat			8	16.17
356	Robots Game Autoplay			3	17.58
273	Logic Glitches			6	16.61
240	Playfair Cipher Cracking			7	16.38
348	Trick-Taking Game			3	17.58
317	Launch to Orbit			4	17.19
228	Maze Mapping Robot			6	16.61
318	Launch to Orbit automated			2	18.08