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 344 (clear filter)

Id	Title	Translations	Author	Solved	Blessing
28	Body Mass Index	DE ES ZH RU SK		11186	3.89
13	Weighted sum of digits	DE ES RU ZH SK		10664	3.98
17	Array Checksum	DE ES RU SK		9370	4.20
48	Collatz Sequence	DE ES RU SK		7527	4.58
12	Modulo and time difference	DE ES RU SK		7661	4.55
18	Square Root	ES RU		6050	4.96
29	Sort with Indexes	RU		5761	5.05
50	Palindromes	DE ES RU SK		5320	5.19
52	Pythagorean Theorem	RU		5104	5.26
67	Fibonacci Sequence	RU		4578	5.45
24	Neumann's Random Generator	DE ES RU		4922	5.32
35	Savings Calculator			4339	5.54
104	Triangle Area	ES		3627	5.85
32	Josephus Problem	RU		4172	5.61
44	Double Dice Roll	RU		4051	5.66
81	Bit Count	RU		3641	5.84
19	Matching Brackets	ES RU		3939	5.71
58	Card Names			3470	5.93
49	Rock Paper Scissors			3514	5.91
128	Combinations Counting			2856	6.27
94	Fool's Day 2014	SK		2975	6.19
59	Bulls and Cows			3085	6.13
61	Prime Numbers Generation	RU		3026	6.17
22	Two Printers	ES RU		3277	6.03
42	Blackjack Counting			2806	6.30
120	Selection Sort			2212	6.71
38	Quadratic Equation			2586	6.44
33	Parity Control	RU		2529	6.48
53	King and Queen			2273	6.66
34	Binary Search			2334	6.62
37	Mortgage Calculator	ZH		2197	6.72
45	Cards Shuffling	ZH		2141	6.77
69	Fibonacci Divisibility			2004	6.88
63	Integer Factorization	ZH		1923	6.95
46	Tic-Tac-Toe	ZH		1975	6.91
62	Prime Ranges			1758	7.11
121	Insertion Sort			1468	7.42
75	Yacht or Dice Poker			1625	7.24
172	Cloud Altitude Measurement			1197	7.78
127	Anagrams			1347	7.57
39	Share Price Volatility			1637	7.23
134	Flying Text Screensaver			1242	7.71
156	Luhn Algorithm	SK		1085	7.95
80	Duel Chances			1229	7.73
36	Code Guesser	UA		1295	7.64
74	Clock Hands			1154	7.84
135	Variable Length Code			975	8.13
105	Convex Polygon Area			1007	8.08
54	Pythagorean Triples			1130	7.88
73	Hexagonal Grid			1037	8.02
97	Girls and Pigs			926	8.22
116	Summing Up			858	8.35
181	Reverse Polish Notation			652	8.83
98	Azimuth at Treasure Island			805	8.46
85	Rotation in 2D Space			812	8.45
122	QuickSort			735	8.62
51	Dungeons and Dragons Dice	UA		871	8.33
40	Paths in the Grid	UA		874	8.32
56	Life is Simple			839	8.39
66	Caesar Cipher Cracker			771	8.54
70	Most Frequent Word			760	8.56
88	Pitch and Notes			709	8.68
108	Star Medals			629	8.89
95	Simple Linear Regression			637	8.87
60	Sweet Harvest			693	8.72
87	Tree Builder			646	8.85
77	Point to Segment Distance			649	8.84
211	Information Entropy			406	9.65
71	Fibonacci Divisibility Advanced			602	8.97
91	Game of 2048			569	9.07
207	Suffix Array			397	9.69
101	Gradient Calculation			527	9.20
143	Extended Euclidean Algorithm			467	9.41
82	Levenshtein Distance			537	9.17
191	Spaceship Weight Fraud			381	9.76
119	Brain Fibo			471	9.39
89	Instrument Tuner			499	9.29
206	Base-32 Encoding			350	9.91
64	Maze Pathfinder			524	9.21
476	Prime Vowel Count		csfpython	18	14.97
79	Cycles Detection			489	9.33
92	Binary Heap			457	9.45
131	Four Pics One Word			404	9.66
83	Graph Generator			445	9.49
136	Variable Length Code Unpack			363	9.84
78	Bezier Curves			418	9.60
90	Lexicographic Permutations			405	9.65
189	Dynamic Web Page			305	10.15
150	Introducing Regexps			343	9.94
126	Sequence of Squares			365	9.84
65	Transitive Closure on Candy States			415	9.61
167	Copy Line			310	10.12
170	Binary Search in Array			304	10.15
154	Breadth First Search			317	10.08
385	Number of steps in Euclidean Algorithm		gardengnome	98	12.11
99	Uphill Shooting			359	9.86
197	Loops in Assembly			269	10.36
117	Divide by Two			335	9.98
144	Modular Inverse			301	10.17
377	Sum of Digits Divisibility			96	12.14
174	Calculation of Pi			260	10.42
161	Topological Sorting			270	10.36
155	Depth First Search			271	10.35
76	Pawn Move Validator			332	10.00
133	Billiard Ball			279	10.30
96	Snake Arcade			303	10.16
165	Safe Landing			250	10.49
140	Proper Bracket Sequences			269	10.36
472	Unreachable Amounts		csfpython	14	15.38
93	Starving Priority Queue			288	10.25
123	Knapsack of Integers			263	10.40
444	White Rectangle			33	13.96
84	Dijkstra in the Network			288	10.25
190	Query String Parameters			207	10.82
130	Combinations with Repetitions			248	10.50
173	Chords of Music			214	10.76
125	Bogosort			246	10.52
146	Color Cubes			214	10.76
323	Next Palindrome		csfpython	103	12.02
129	Enumerating Combinations			219	10.72
151	Word Ladders			201	10.87
164	Page Rank			190	10.96
139	Beam Balance and Masses			200	10.88
208	Neighborhood of a String			160	11.26
138	Huffman Coding			198	10.89
360	Whisky Blending		csfpython	72	12.64
194	Convex Hull and Farmers			162	11.24
201	Point in Polygon			154	11.33
253	Beautiful Line Chart			126	11.67
433	A Crime on Logic Island		csfpython	30	14.12
152	RSA Cryptography			176	11.10
137	Shannon-Fano Coding			183	11.03
111	Necklace Count			196	10.91
337	Introducing Zeckendorf		csfpython	78	12.50
399	Methane Identification		moxieman	45	13.44
110	Lucky Tickets Advanced			186	11.00
199	Employees Web App			142	11.47
192	Gangster Battles			145	11.43
269	Fibonacci coding			102	12.04
106	Random Search Optimization			166	11.20
148	Public Key Cryptography Intro			147	11.41
124	Knapsack Backtracking			157	11.29
168	Caesar meets BF			138	11.52
162	Rubik's Cube			137	11.53
202	Dancing Pairs			120	11.76
179	Look and Say binary			129	11.63
459	Number String Multiples of Thirteen		csfpython	12	15.63
182	Frodo and Black Riders			121	11.74
102	Travelling Salesman			152	11.35
198	Prn Hex Str			113	11.86
177	Nim Game			119	11.77
160	Social Web Scraper			125	11.69
463	Crossing Towns		csfpython	10	15.92
158	Hamming Codes			124	11.70
359	Find 3 Numbers		csfpython	48	13.33
185	Simple 3D Scene			111	11.89
157	Emirp primE			120	11.76
258	Text Justification			81	12.43
469	Game of Generals			7	16.48
372	String Minimization			40	13.64
411	Elo Ratings		moxieman	26	14.36
159	Hard Life			110	11.91
449	Space Pirates		csfpython	13	15.50
153	Fermat goes hacking RSA			109	11.92
458	Mountain Panorama		csfpython	10	15.92
100	Crossing the Road			125	11.69
384	Equal Hamming Distance		csfpython	33	13.96
460	Carlsdale Caverns		csfpython	9	16.09
115	Gradient Descent for SLE			116	11.82
427	Cheapest Bus Tickets			19	14.88
196	Fibonacci Randomizer			89	12.27
281	Basic Tokenizer			63	12.86
141	Sliding Window Search			105	11.99
291	Squirrels vs. Acorns		zelevin	59	12.98
277	The Adventure of Morse Code		zelevin	62	12.89
193	Maximum Flow			85	12.35
186	Simple 3D Scene (cont)			87	12.31
464	Graph to Loops Decomposition			7	16.48
166	Page Rank as Eigenvector			92	12.22
210	Ticket Puzzle			79	12.48
467	Permutation Generator		csfpython	6	16.71
142	LZ77 decompression			97	12.12
209	Suffix Array Advanced			78	12.50
434	A Crime on Logic Island Advanced		csfpython	15	15.27
112	Travelling Salesman Inverted			102	12.04
113	Ground Zero			101	12.05
216	Cracking Linear Congruential Generator			73	12.61
203	Tic-Tac-Toe Minimax Algorithm			76	12.54
219	Neural Network Calculation			71	12.66
274	Two Buckets			56	13.07
400	Memory Check			23	14.57
457	Railroad and Hamilton			8	16.27
351	Nicomachus			34	13.91
132	Stream Cipher Breaking			87	12.31
381	Finding Squares		csfpython	26	14.36
107	Knight's Tour			92	12.22
163	Colliding Balls			78	12.50
446	Hangman			10	15.92
175	Algae Robot			73	12.61
435	Maze Mapping API-Robot			12	15.63
407	River Labyrinth			18	14.97
241	Village Ways			55	13.10
205	Clustering the Stars			62	12.89
230	Move-To-Front Transform			56	13.07
445	Formula 1			9	16.09
218	Rain Must Fall	DE		57	13.04
334	Find all of the SETs		csfpython	32	14.02
200	Fizz Buzz in Asm			59	12.98
204	Wandering Star			58	13.01
335	Venus Visible			31	14.07
412	Json Fix			15	15.27
406	Wormholes of Cygnus		moxieman	16	15.17
421	Princess and Tiger			13	15.50
257	Missing Records in SQL			45	13.44
149	Prime Chains			65	12.81
440	Mud Walker			9	16.09
255	LCM of a range			44	13.48
212	BCD to Hex			52	13.19
423	Russian Dolls		csfpython	12	15.63
390	Card Pairing Solitaire			18	14.97
233	Language Study			47	13.36
118	Maxit Single-Player			68	12.73
223	Introducing Scheme			47	13.36
307	The Problem of Too Many Clues		zelevin	32	14.02
379	Dice with Infinity Sides		telebashna	19	14.88
147	Color Cubes Advanced			60	12.95
178	Maze of the Wumpus			54	13.13
180	Simple Game of Sticks			53	13.16
451	Maximize Toy Production		csfpython	6	16.71
439	Power Sum of Digits		csfpython	8	16.27
247	Towers of Hanoi			40	13.64
426	Weighted Sum of Digits 2		csfpython	10	15.92
420	Life on a String		csfpython	11	15.77
229	Burrows-Wheeler Transform			42	13.56
455	D flip-flop			5	16.98
442	Chomp			7	16.48
454	Multiplexer 4x4			5	16.98
299	Tree Visualizer			29	14.18
376	Cartesian Tree Visualization			17	15.07
183	Connect Four			46	13.40
347	Unwanted Multiples		csfpython	21	14.72
338	Throwing Easter Eggs		gardengnome	22	14.64
354	Too Many Divisors		csfpython	19	14.88
409	Election Fever		csfpython	11	15.77
284	Rotate Array In-Place			29	14.18
270	Hexlife			31	14.07
405	Three Friendly Knights		csfpython	11	15.77
470	Shogi Engine			2	18.18
462	Rota Boards		csfpython	3	17.68
432	Ball Bearing Collisions		csfpython	7	16.48
286	Self-Printing Program			26	14.36
392	Fixing an Anagram			12	15.63
238	Bear Hunt			32	14.02
243	Grille Encryption			31	14.07
234	Train Merge			32	14.02
256	Rook Jump Maze			29	14.18
357	Ulam's Prime Spiral			16	15.17
349	Burrows		gardengnome	17	15.07
340	Zeckendorf Lite		csfpython	18	14.97
339	Parking Lot			18	14.97
217	Personality Swap			33	13.96
362	Euclid, Manhattan and Chebyshev			15	15.27
417	Unfortunate Bubble Sort		gardengnome	8	16.27
408	Mad Beaver in River Labyrinth			9	16.09
450	Bead Games		csfpython	4	17.29
169	Automated Landing			37	13.77
363	Language Detector			14	15.38
268	Logic Transformation			25	14.43
367	Roguelike 1d			13	15.50
295	Vigenere Cipher Cracker			21	14.72
456	Every Third Bit			3	17.68
285	Rotate Matrix In Place			22	14.64
393	Urban Planning		csfpython	10	15.92
271	A Knight some Trolls and a Princess		csfpython	23	14.57
361	Rogue Mazes			13	15.50
398	Collecting Diamonds		csfpython	9	16.09
275	Three Buckets			22	14.64
358	Mandelbrot Set			13	15.50
415	Smallest Message		gardengnome	7	16.48
395	Growth of Micro-Organisms		csfpython	9	16.09
424	New Towers of Hanoi		csfpython	6	16.71
344	Throwing Easter Eggs Part 2		gardengnome	14	15.38
383	E2C2S - try harder!		gardengnome	10	15.92
382	Die Throw Sequences		csfpython	10	15.92
419	Special Digits		csfpython	6	16.71
341	Zeckendorf Advanced		csfpython	13	15.50
416	Socket Server		testuser	6	16.71
260	Low Cost Road Network		csfpython	20	14.80
213	Micro-Life	SK		24	14.50
402	Game of Stones		csfpython	7	16.48
413	Tree Painting		csfpython	6	16.71
220	Neural Network Training			23	14.57
422	Mabinogion Sheep		moxieman	5	16.98
410	Village Door Shuffle		csfpython	6	16.71
222	Easter Eggs Advanced			22	14.64
336	Currency Arbitrage			12	15.63
262	Easter Bunnies 2D Advanced		gardengnome	18	14.97
221	XWords		quandray	21	14.72
430	Cutting Paper		csfpython	4	17.29
254	Rule 30 by Turing			18	14.97
266	Pancake Sorting			17	15.07
404	Methane Normalization		moxieman	6	16.71
391	Scout Proficiency Badges		csfpython	7	16.48
263	Easter Bunnies 3D		gardengnome	17	15.07
235	Train Merge Advanced			19	14.88
306	Line Drawing Algorithm			13	15.50
279	Two Buckets Advanced		csfpython	15	15.27
380	Treap Study			7	16.48
365	Flower Border Arrangements		csfpython	8	16.27
333	Happy Triplets			10	15.92
345	Elliptic Curves Basics			9	16.09
267	Turing Maze			14	15.38
237	Road Network Destruction			16	15.17
227	Hashtable Implementation			16	15.17
224	Transposing List of Lists			16	15.17
397	Trading Bot			5	16.98
264	Party Presents		csfpython	13	15.50
378	Space Invaders Automation			6	16.71
327	Dobbin's Long Journey		csfpython	9	16.09
342	Adaptive Arithmetic Coding			8	16.27
373	Railroad Rat		csfpython	6	16.71
225	Hamurabi			14	15.38
328	Beep Beep Beep			8	16.27
308	Circle Drawing Algorithm			9	16.09
252	Shadok and Gibis			12	15.63
215	Klotski	SK		13	15.50
251	Radio Spies			11	15.77
370	Jewels			5	16.98
369	Flappy Bird			5	16.98
302	Sound-Controlled Robot			8	16.27
280	Three Buckets Re-visited		csfpython	9	16.09
226	Multiplicative Persistence Backtrace			11	15.77
232	Shift Register Randomizer			10	15.92
396	Chocolate Triangles and BF		moxieman	3	17.68
348	Trick-Taking Game			5	16.98
248	Christmas Puzzle			9	16.09
240	Playfair Cipher Cracking			9	16.09
236	Is the Earth Flat			9	16.09
273	Logic Glitches			7	16.48
355	Robots Game			4	17.29
228	Maze Mapping Robot			8	16.27
356	Robots Game Autoplay			3	17.68
317	Launch to Orbit			4	17.29
318	Launch to Orbit automated			2	18.18