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Problems
Note that you can solve most task in any order!
Already solved ones are at the bottom of the table.
Tagged with:
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Id
Title
Translations
Author
Solved
Blessing
1
Sum "A+B"
DE
ES
FR
AR
ZH
RO
RU
SK
59693
1.00
2
Sum in Loop
DE
ES
FR
AR
ZH
RO
RU
SK
36179
1.87
3
Sums in Loop
DE
ES
FR
AR
ZH
RO
RU
SK
27590
2.34
4
Minimum of Two
DE
ES
FR
AR
ZH
RO
RU
SK
24050
2.58
5
Minimum of Three
DE
ES
FR
AR
ZH
RO
RU
SK
21532
2.77
15
Maximum of array
DE
ES
AR
ZH
RO
RU
SK
18823
3.00
6
Rounding
DE
ES
AR
ZH
RO
RU
SK
17248
3.16
7
Fahrenheit to Celsius
DE
ES
AR
ZH
RO
RU
SK
16525
3.23
20
Vowel Count
DE
ES
AR
ZH
RO
RU
SK
13428
3.59
11
Sum of digits
DE
ES
RU
ZH
SK
13359
3.60
8
Arithmetic Progression
DE
ES
RU
ZH
SK
12551
3.71
41
Median of Three
DE
ES
AR
ZH
RO
RU
SK
11486
3.86
9
Triangles
DE
ES
RU
ZH
SK
11990
3.79
28
Body Mass Index
DE
ES
ZH
RU
SK
11359
3.88
13
Weighted sum of digits
DE
ES
RU
ZH
SK
10837
3.96
43
Dice Rolling
DE
ES
ZH
RU
SK
9757
4.15
16
Average of an array
DE
ES
RU
SK
10280
4.06
30
Reverse String
DE
ES
RU
SK
9709
4.15
17
Array Checksum
DE
ES
RU
SK
9554
4.18
21
Array Counters
DE
ES
RU
SK
8891
4.31
10
Linear Function
DE
ES
RU
SK
8649
4.36
48
Collatz Sequence
DE
ES
RU
SK
7719
4.55
12
Modulo and time difference
DE
ES
RU
SK
7849
4.52
14
Modular Calculator
ES
SK
7259
4.66
27
Bubble Sort
ES
RU
SK
6581
4.83
26
Greatest Common Divisor
ES
SK
RU
6404
4.88
18
Square Root
ES
RU
6232
4.92
29
Sort with Indexes
RU
5941
5.01
50
Palindromes
DE
ES
RU
SK
5494
5.14
23
Bubble in Array
ES
RU
5697
5.08
52
Pythagorean Theorem
RU
5274
5.21
31
Rotate String
ES
RU
5451
5.16
67
Fibonacci Sequence
RU
4740
5.40
68
Bicycle Race
ES
RU
4706
5.41
24
Neumann's Random Generator
DE
ES
RU
5100
5.27
57
Smoothing the Weather
ES
RU
4697
5.42
35
Savings Calculator
4512
5.49
104
Triangle Area
ES
3778
5.79
25
Linear Congruential Generator
RU
4457
5.51
44
Double Dice Roll
RU
4223
5.60
32
Josephus Problem
RU
4325
5.56
81
Bit Count
RU
3790
5.79
19
Matching Brackets
ES
RU
4107
5.65
58
Card Names
3626
5.87
49
Rock Paper Scissors
3688
5.84
47
Caesar Shift Cipher
SK
3696
5.83
128
Combinations Counting
2991
6.20
55
Matching Words
3548
5.90
94
Fool's Day 2014
SK
3101
6.14
59
Bulls and Cows
3223
6.07
61
Prime Numbers Generation
RU
3168
6.10
22
Two Printers
ES
RU
3428
5.96
42
Blackjack Counting
2946
6.23
120
Selection Sort
2328
6.64
38
Quadratic Equation
2728
6.36
33
Parity Control
RU
2658
6.40
53
King and Queen
2380
6.60
34
Binary Search
2467
6.53
171
Tree Height Measurement
1669
7.21
37
Mortgage Calculator
ZH
2310
6.65
45
Cards Shuffling
ZH
2252
6.69
69
Fibonacci Divisibility
2100
6.81
63
Integer Factorization
ZH
2022
6.88
46
Tic-Tac-Toe
ZH
2074
6.84
62
Prime Ranges
1852
7.03
72
Funny Words Generator
1793
7.09
121
Insertion Sort
1552
7.34
75
Yacht or Dice Poker
1692
7.19
172
Cloud Altitude Measurement
1266
7.69
39
Share Price Volatility
1734
7.15
127
Anagrams
1367
7.56
134
Flying Text Screensaver
1284
7.67
156
Luhn Algorithm
SK
1132
7.89
80
Duel Chances
1299
7.65
114
Tricky Printing
1195
7.79
36
Code Guesser
UA
1391
7.53
74
Clock Hands
1223
7.75
135
Variable Length Code
1012
8.08
54
Pythagorean Triples
1209
7.77
105
Convex Polygon Area
1050
8.02
73
Hexagonal Grid
1085
7.96
145
Modular Exponentiation
891
8.30
97
Girls and Pigs
965
8.16
116
Summing Up
873
8.34
181
Reverse Polish Notation
681
8.77
98
Azimuth at Treasure Island
839
8.41
122
QuickSort
778
8.54
51
Dungeons and Dragons Dice
UA
921
8.24
40
Paths in the Grid
UA
932
8.22
85
Rotation in 2D Space
839
8.41
56
Life is Simple
877
8.33
187
Static Web Page
616
8.94
188
Basics of HTML
587
9.03
66
Caesar Cipher Cracker
802
8.48
70
Most Frequent Word
793
8.50
88
Pitch and Notes
743
8.62
87
Tree Builder
711
8.69
60
Sweet Harvest
737
8.63
108
Star Medals
656
8.83
95
Simple Linear Regression
666
8.81
77
Point to Segment Distance
674
8.79
71
Fibonacci Divisibility Advanced
638
8.88
86
Brainfuck Interpreter
616
8.94
211
Information Entropy
426
9.58
91
Game of 2048
595
9.00
207
Suffix Array
417
9.62
101
Gradient Calculation
547
9.15
143
Extended Euclidean Algorithm
482
9.37
82
Levenshtein Distance
559
9.11
176
Say 100
427
9.58
191
Spaceship Weight Fraud
402
9.68
89
Instrument Tuner
521
9.23
154
Breadth First Search
439
9.53
119
Brain Fibo
479
9.38
206
Base-32 Encoding
371
9.82
64
Maze Pathfinder
544
9.16
79
Cycles Detection
518
9.24
195
Mul Two
374
9.81
92
Binary Heap
477
9.39
83
Graph Generator
476
9.39
155
Depth First Search
393
9.72
131
Four Pics One Word
413
9.64
136
Variable Length Code Unpack
377
9.79
90
Lexicographic Permutations
423
9.59
78
Bezier Curves
434
9.55
65
Transitive Closure on Candy States
436
9.54
150
Introducing Regexps
352
9.91
126
Sequence of Squares
372
9.82
189
Dynamic Web Page
309
10.14
167
Copy Line
319
10.08
170
Binary Search in Array
310
10.13
99
Uphill Shooting
369
9.83
161
Topological Sorting
311
10.13
197
Loops in Assembly
273
10.35
117
Divide by Two
343
9.96
144
Modular Inverse
315
10.10
76
Pawn Move Validator
350
9.92
174
Calculation of Pi
269
10.38
93
Starving Priority Queue
329
10.03
133
Billiard Ball
291
10.24
96
Snake Arcade
315
10.10
140
Proper Bracket Sequences
278
10.32
165
Safe Landing
255
10.47
184
Matches Picking
quandray
236
10.60
103
Easter Eggs
294
10.22
84
Dijkstra in the Network
304
10.17
123
Knapsack of Integers
275
10.34
109
Lucky Tickets
272
10.36
173
Chords of Music
228
10.66
130
Combinations with Repetitions
256
10.46
125
Bogosort
254
10.48
190
Query String Parameters
209
10.81
146
Color Cubes
221
10.72
129
Enumerating Combinations
227
10.67
151
Word Ladders
204
10.86
164
Page Rank
195
10.93
139
Beam Balance and Masses
208
10.82
208
Neighborhood of a String
168
11.19
138
Huffman Coding
204
10.86
194
Convex Hull and Farmers
168
11.19
201
Point in Polygon
162
11.25
152
RSA Cryptography
185
11.03
111
Necklace Count
204
10.86
137
Shannon-Fano Coding
189
10.99
102
Travelling Salesman
205
10.85
110
Lucky Tickets Advanced
196
10.93
192
Gangster Battles
153
11.35
199
Employees Web App
143
11.47
148
Public Key Cryptography Intro
157
11.31
106
Random Search Optimization
173
11.14
124
Knapsack Backtracking
165
11.22
162
Rubik's Cube
144
11.46
202
Dancing Pairs
126
11.69
168
Caesar meets BF
139
11.52
214
Sick Travellers
118
11.80
179
Look and Say binary
131
11.62
182
Frodo and Black Riders
125
11.70
198
Prn Hex Str
113
11.88
158
Hamming Codes
127
11.67
177
Nim Game
120
11.77
160
Social Web Scraper
126
11.69
157
Emirp primE
125
11.70
185
Simple 3D Scene
113
11.88
159
Hard Life
112
11.89
100
Crossing the Road
131
11.62
153
Fermat goes hacking RSA
113
11.88
115
Gradient Descent for SLE
120
11.77
141
Sliding Window Search
108
11.95
112
Travelling Salesman Inverted
115
11.85
196
Fibonacci Randomizer
89
12.29
186
Simple 3D Scene (cont)
91
12.25
142
LZ77 decompression
102
12.05
193
Maximum Flow
87
12.33
210
Ticket Puzzle
82
12.43
166
Page Rank as Eigenvector
94
12.19
209
Suffix Array Advanced
79
12.49
113
Ground Zero
104
12.02
203
Tic-Tac-Toe Minimax Algorithm
78
12.51
216
Cracking Linear Congruential Generator
74
12.60
219
Neural Network Calculation
72
12.65
107
Knight's Tour
99
12.10
132
Stream Cipher Breaking
90
12.27
163
Colliding Balls
79
12.49
175
Algae Robot
74
12.60
205
Clustering the Stars
65
12.83
230
Move-To-Front Transform
59
12.99
218
Rain Must Fall
DE
58
13.02
204
Wandering Star
60
12.96
200
Fizz Buzz in Asm
59
12.99
149
Prime Chains
67
12.77
212
BCD to Hex
54
13.14
118
Maxit Single-Player
71
12.67
233
Language Study
49
13.31
223
Introducing Scheme
50
13.27
180
Simple Game of Sticks
56
13.08
147
Color Cubes Advanced
60
12.96
178
Maze of the Wumpus
54
13.14
229
Burrows-Wheeler Transform
45
13.45
183
Connect Four
46
13.42
234
Train Merge
36
13.83
238
Bear Hunt
32
14.03
217
Personality Swap
34
13.93
169
Automated Landing
39
13.70
231
Dice Black Jack
24
14.51
222
Easter Eggs Advanced
24
14.51
220
Neural Network Training
24
14.51
213
Micro-Life
SK
24
14.51
235
Train Merge Advanced
20
14.81
221
XWords
quandray
21
14.73
224
Transposing List of Lists
17
15.08
237
Road Network Destruction
16
15.18
227
Hashtable Implementation
16
15.18
225
Hamurabi
15
15.29
215
Klotski
SK
13
15.52
236
Is the Earth Flat
11
15.79
232
Shift Register Randomizer
11
15.79
226
Multiplicative Persistence Backtrace
11
15.79
239
Foxes and Geese
9
16.10
228
Maze Mapping Robot
8
16.29