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 300 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
28	Body Mass Index	DE ES ZH RU SK		10388	3.86
13	Weighted sum of digits	DE ES RU ZH SK		9885	3.95
17	Array Checksum	DE ES RU SK		8673	4.17
48	Collatz Sequence	DE ES RU SK		7054	4.53
12	Modulo and time difference	DE ES RU SK		7161	4.51
18	Square Root	ES RU		5599	4.93
29	Sort with Indexes	RU		5412	4.99
50	Palindromes	DE ES RU SK		4947	5.15
52	Pythagorean Theorem	RU		4743	5.22
67	Fibonacci Sequence	RU		4299	5.39
24	Neumann's Random Generator	DE ES RU		4628	5.26
104	Triangle Area			3372	5.81
35	Savings Calculator			4058	5.49
81	Bit Count	RU		3423	5.79
44	Double Dice Roll	RU		3802	5.61
32	Josephus Problem	RU		3906	5.56
128	Combinations Counting			2676	6.22
19	Matching Brackets	ES RU		3644	5.68
58	Card Names			3249	5.88
49	Rock Paper Scissors			3282	5.86
94	Fool's Day 2014	SK		2776	6.15
59	Bulls and Cows			2871	6.09
61	Prime Numbers Generation	RU		2827	6.12
22	Two Printers	ES RU		3030	6.00
42	Blackjack Counting			2597	6.27
120	Selection Sort			2040	6.69
38	Quadratic Equation			2393	6.41
33	Parity Control	RU		2346	6.44
53	King and Queen			2101	6.64
34	Binary Search			2161	6.59
69	Fibonacci Divisibility			1862	6.85
37	Mortgage Calculator	ZH		2030	6.70
45	Cards Shuffling	ZH		1974	6.74
63	Integer Factorization	ZH		1786	6.92
46	Tic-Tac-Toe	ZH		1832	6.87
62	Prime Ranges			1633	7.07
121	Insertion Sort			1349	7.41
172	Cloud Altitude Measurement			1089	7.78
75	Yacht or Dice Poker			1511	7.21
127	Anagrams			1275	7.50
134	Flying Text Screensaver			1180	7.64
39	Share Price Volatility			1510	7.21
156	Luhn Algorithm	SK		1000	7.93
409	Election Fever		csfpython	6	16.55
80	Duel Chances			1138	7.70
135	Variable Length Code			893	8.12
74	Clock Hands			1076	7.80
36	Code Guesser	UA		1170	7.65
105	Convex Polygon Area			920	8.07
54	Pythagorean Triples			1039	7.86
73	Hexagonal Grid			948	8.02
116	Summing Up			813	8.28
407	River Labyrinth			10	15.76
97	Girls and Pigs			848	8.21
408	Mad Beaver in River Labyrinth			7	16.31
181	Reverse Polish Notation			585	8.86
122	QuickSort			682	8.59
98	Azimuth at Treasure Island			735	8.46
385	Number of steps in Euclidean Algorithm		gardengnome	60	12.79
85	Rotation in 2D Space			738	8.45
51	Dungeons and Dragons Dice	UA		801	8.31
56	Life is Simple			771	8.38
40	Paths in the Grid	UA		772	8.37
70	Most Frequent Word			709	8.52
66	Caesar Cipher Cracker			709	8.52
88	Pitch and Notes			650	8.67
377	Sum of Digits Divisibility			67	12.60
399	Methane Identification		moxieman	23	14.41
108	Star Medals			599	8.81
95	Simple Linear Regression			584	8.86
211	Information Entropy			368	9.66
87	Tree Builder			593	8.83
60	Sweet Harvest			629	8.73
207	Suffix Array			364	9.68
77	Point to Segment Distance			587	8.85
405	Three Friendly Knights		csfpython	9	15.93
143	Extended Euclidean Algorithm			436	9.36
71	Fibonacci Divisibility Advanced			547	8.97
91	Game of 2048			513	9.08
406	Wormholes of Cygnus		moxieman	7	16.31
191	Spaceship Weight Fraud			344	9.78
119	Brain Fibo			456	9.29
101	Gradient Calculation			480	9.20
206	Base-32 Encoding			309	9.96
82	Levenshtein Distance			490	9.16
400	Memory Check			15	15.11
89	Instrument Tuner			459	9.28
131	Four Pics One Word			386	9.58
64	Maze Pathfinder			475	9.22
189	Dynamic Web Page			300	10.01
79	Cycles Detection			438	9.36
92	Binary Heap			415	9.45
150	Introducing Regexps			330	9.85
126	Sequence of Squares			355	9.72
136	Variable Length Code Unpack			341	9.79
170	Binary Search in Array			291	10.07
83	Graph Generator			393	9.54
167	Copy Line			292	10.06
197	Loops in Assembly			255	10.29
90	Lexicographic Permutations			378	9.61
154	Breadth First Search			295	10.04
78	Bezier Curves			379	9.61
117	Divide by Two			321	9.90
99	Uphill Shooting			336	9.82
65	Transitive Closure on Candy States			365	9.67
144	Modular Inverse			274	10.17
155	Depth First Search			258	10.27
410	Village Door Shuffle		csfpython	-	19.93
174	Calculation of Pi			236	10.43
161	Topological Sorting			243	10.38
165	Safe Landing			230	10.47
133	Billiard Ball			260	10.26
190	Query String Parameters			202	10.70
140	Proper Bracket Sequences			243	10.38
76	Pawn Move Validator			293	10.05
96	Snake Arcade			274	10.17
323	Next Palindrome		csfpython	75	12.40
404	Methane Normalization		moxieman	5	16.81
123	Knapsack of Integers			240	10.40
93	Starving Priority Queue			263	10.24
130	Combinations with Repetitions			230	10.47
84	Dijkstra in the Network			266	10.22
384	Equal Hamming Distance		csfpython	21	14.56
125	Bogosort			231	10.46
173	Chords of Music			192	10.78
360	Whisky Blending		csfpython	40	13.48
390	Card Pairing Solitaire			15	15.11
337	Introducing Zeckendorf		csfpython	55	12.93
146	Color Cubes			198	10.73
151	Word Ladders			190	10.80
381	Finding Squares		csfpython	21	14.56
208	Neighborhood of a String			145	11.27
372	String Minimization			27	14.14
129	Enumerating Combinations			197	10.74
164	Page Rank			172	10.97
138	Huffman Coding			187	10.83
194	Convex Hull and Farmers			147	11.25
139	Beam Balance and Masses			182	10.88
201	Point in Polygon			139	11.34
199	Employees Web App			139	11.34
192	Gangster Battles			136	11.38
152	RSA Cryptography			161	11.09
137	Shannon-Fano Coding			170	10.99
359	Find 3 Numbers		csfpython	31	13.91
398	Collecting Diamonds		csfpython	7	16.31
111	Necklace Count			177	10.93
110	Lucky Tickets Advanced			167	11.03
402	Game of Stones		csfpython	4	17.13
168	Caesar meets BF			134	11.41
393	Urban Planning		csfpython	9	15.93
179	Look and Say binary			120	11.60
202	Dancing Pairs			108	11.78
269	Fibonacci coding			73	12.45
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			143	11.29
106	Random Search Optimization			150	11.21
182	Frodo and Black Riders			112	11.71
177	Nim Game			112	11.71
253	Beautiful Line Chart			75	12.40
185	Simple 3D Scene			107	11.79
160	Social Web Scraper			117	11.64
102	Travelling Salesman			140	11.33
157	Emirp primE			114	11.68
158	Hamming Codes			112	11.71
258	Text Justification			65	12.65
392	Fixing an Anagram			7	16.31
291	Squirrels vs. Acorns		zelevin	49	13.13
159	Hard Life			103	11.86
379	Dice with Infinity Sides		telebashna	12	15.47
281	Basic Tokenizer			51	13.06
196	Fibonacci Randomizer			85	12.19
277	The Adventure of Morse Code		zelevin	52	13.03
153	Fermat goes hacking RSA			99	11.93
351	Nicomachus			22	14.48
100	Crossing the Road			116	11.65
395	Growth of Micro-Organisms		csfpython	5	16.81
186	Simple 3D Scene (cont)			83	12.23
115	Gradient Descent for SLE			109	11.76
376	Cartesian Tree Visualization			12	15.47
141	Sliding Window Search			98	11.94
335	Venus Visible			26	14.20
210	Ticket Puzzle			69	12.55
209	Suffix Array Advanced			69	12.55
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
219	Neural Network Calculation			62	12.73
383	E2C2S - try harder!		gardengnome	8	16.11
216	Cracking Linear Congruential Generator			61	12.76
112	Travelling Salesman Inverted			92	12.05
382	Die Throw Sequences		csfpython	8	16.11
113	Ground Zero			89	12.11
274	Two Buckets			40	13.48
334	Find all of the SETs		csfpython	22	14.48
363	Language Detector			13	15.34
132	Stream Cipher Breaking			80	12.29
163	Colliding Balls			70	12.52
397	Trading Bot			3	17.52
175	Algae Robot			66	12.62
205	Clustering the Stars			57	12.87
200	Fizz Buzz in Asm			57	12.87
107	Knight's Tour			82	12.25
367	Roguelike 1d			11	15.61
396	Chocolate Triangles and BF		moxieman	3	17.52
230	Move-To-Front Transform			47	13.20
354	Too Many Divisors		csfpython	14	15.22
204	Wandering Star			53	13.00
212	BCD to Hex			50	13.10
241	Village Ways			42	13.39
347	Unwanted Multiples		csfpython	15	15.11
257	Missing Records in SQL			37	13.61
218	Rain Must Fall	DE		45	13.28
149	Prime Chains			60	12.79
307	The Problem of Too Many Clues		zelevin	23	14.41
233	Language Study			40	13.48
358	Mandelbrot Set			11	15.61
349	Burrows		gardengnome	13	15.34
357	Ulam's Prime Spiral			11	15.61
361	Rogue Mazes			10	15.76
338	Throwing Easter Eggs		gardengnome	15	15.11
178	Maze of the Wumpus			50	13.10
147	Color Cubes Advanced			55	12.93
378	Space Invaders Automation			6	16.55
118	Maxit Single-Player			60	12.79
362	Euclid, Manhattan and Chebyshev			9	15.93
180	Simple Game of Sticks			46	13.24
223	Introducing Scheme			37	13.61
391	Scout Proficiency Badges		csfpython	3	17.52
299	Tree Visualizer			21	14.56
380	Treap Study			5	16.81
255	LCM of a range			29	14.02
229	Burrows-Wheeler Transform			33	13.80
183	Connect Four			41	13.43
340	Zeckendorf Lite		csfpython	12	15.47
247	Towers of Hanoi			29	14.02
339	Parking Lot			12	15.47
344	Throwing Easter Eggs Part 2		gardengnome	10	15.76
270	Hexlife			22	14.48
284	Rotate Array In-Place			19	14.72
341	Zeckendorf Advanced		csfpython	10	15.76
238	Bear Hunt			26	14.20
217	Personality Swap			29	14.02
286	Self-Printing Program			18	14.81
234	Train Merge			25	14.27
169	Automated Landing			33	13.80
268	Logic Transformation			19	14.72
275	Three Buckets			18	14.81
256	Rook Jump Maze			20	14.64
285	Rotate Matrix In Place			16	15.01
336	Currency Arbitrage			9	15.93
243	Grille Encryption			21	14.56
271	A Knight some Trolls and a Princess		csfpython	17	14.91
213	Micro-Life	SK		24	14.34
306	Line Drawing Algorithm			12	15.47
345	Elliptic Curves Basics			7	16.31
369	Flappy Bird			4	17.13
333	Happy Triplets			8	16.11
220	Neural Network Training			21	14.56
260	Low Cost Road Network		csfpython	16	15.01
365	Flower Border Arrangements		csfpython	4	17.13
263	Easter Bunnies 3D		gardengnome	15	15.11
262	Easter Bunnies 2D Advanced		gardengnome	15	15.11
373	Railroad Rat		csfpython	3	17.52
266	Pancake Sorting			14	15.22
279	Two Buckets Advanced		csfpython	12	15.47
370	Jewels			3	17.52
328	Beep Beep Beep			7	16.31
254	Rule 30 by Turing			14	15.22
221	XWords		quandray	17	14.91
222	Easter Eggs Advanced			16	15.01
355	Robots Game			4	17.13
308	Circle Drawing Algorithm			8	16.11
342	Adaptive Arithmetic Coding			5	16.81
235	Train Merge Advanced			14	15.22
237	Road Network Destruction			12	15.47
356	Robots Game Autoplay			3	17.52
215	Klotski	SK		13	15.34
327	Dobbin's Long Journey		csfpython	5	16.81
267	Turing Maze			9	15.93
264	Party Presents		csfpython	9	15.93
227	Hashtable Implementation			11	15.61
226	Multiplicative Persistence Backtrace			11	15.61
225	Hamurabi			11	15.61
302	Sound-Controlled Robot			6	16.55
348	Trick-Taking Game			3	17.52
248	Christmas Puzzle			9	15.93
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	16.55
251	Radio Spies			7	16.31
232	Shift Register Randomizer			7	16.31
240	Playfair Cipher Cracking			6	16.55
280	Three Buckets Re-visited		csfpython	4	17.13
228	Maze Mapping Robot			5	16.81
318	Launch to Orbit automated			2	18.02