Home / Login
Problems
School
Ranking
Forum
Help
Mess
06:47:02
Problems
Note that you can solve most task in any order!
Already solved ones are at the bottom of the table.
Tagged with:
c-0
- total 239
(clear filter)
Trending
Sort by Num of Solvers
Sort by Creation Order
by Solvers (with solved)
by Creation (with solved)
Id
Title
Translations
Author
Solved
Blessing
1
Sum "A+B"
DE
ES
FR
AR
ZH
RO
RU
SK
53809
1.00
2
Sum in Loop
DE
ES
FR
AR
ZH
RO
RU
SK
33045
1.85
3
Sums in Loop
DE
ES
FR
AR
ZH
RO
RU
SK
25175
2.32
4
Minimum of Two
DE
ES
FR
AR
ZH
RO
RU
SK
21920
2.56
5
Minimum of Three
DE
ES
FR
AR
ZH
RO
RU
SK
19645
2.75
15
Maximum of array
DE
ES
AR
ZH
RO
RU
SK
17178
2.98
6
Rounding
DE
ES
AR
ZH
RO
RU
SK
15885
3.12
7
Fahrenheit to Celsius
DE
ES
AR
ZH
RO
RU
SK
15168
3.20
20
Vowel Count
DE
ES
AR
ZH
RO
RU
SK
12319
3.56
11
Sum of digits
DE
ES
RU
ZH
SK
12177
3.58
41
Median of Three
DE
ES
AR
ZH
RO
RU
SK
10532
3.83
8
Arithmetic Progression
DE
ES
RU
ZH
SK
11390
3.70
28
Body Mass Index
DE
ES
ZH
RU
SK
10372
3.86
9
Triangles
DE
ES
RU
ZH
SK
10815
3.79
13
Weighted sum of digits
DE
ES
RU
ZH
SK
9872
3.95
43
Dice Rolling
DE
ES
ZH
RU
SK
8937
4.12
16
Average of an array
DE
ES
RU
SK
9356
4.04
30
Reverse String
DE
RU
SK
8815
4.14
17
Array Checksum
DE
ES
RU
SK
8662
4.17
21
Array Counters
DE
ES
RU
SK
8097
4.29
48
Collatz Sequence
DE
ES
RU
SK
7044
4.53
10
Linear Function
DE
ES
RU
SK
7765
4.36
12
Modulo and time difference
DE
ES
RU
SK
7149
4.51
14
Modular Calculator
ES
SK
6601
4.64
27
Bubble Sort
ES
RU
SK
5982
4.82
26
Greatest Common Divisor
RU
SK
5839
4.86
18
Square Root
ES
RU
5588
4.93
29
Sort with Indexes
RU
5401
4.99
50
Palindromes
DE
ES
RU
SK
4938
5.15
23
Bubble in Array
ES
RU
5177
5.07
52
Pythagorean Theorem
RU
4733
5.22
31
Rotate String
ES
RU
4941
5.15
67
Fibonacci Sequence
RU
4293
5.39
68
Bicycle Race
ES
RU
4262
5.40
57
Smoothing the Weather
ES
RU
4299
5.39
24
Neumann's Random Generator
DE
ES
RU
4618
5.27
104
Triangle Area
3366
5.81
35
Savings Calculator
4048
5.49
25
Linear Congruential Generator
RU
4006
5.51
81
Bit Count
RU
3416
5.79
44
Double Dice Roll
RU
3795
5.61
32
Josephus Problem
RU
3897
5.56
128
Combinations Counting
2673
6.21
19
Matching Brackets
ES
RU
3635
5.68
58
Card Names
3243
5.88
47
Caesar Shift Cipher
SK
3329
5.83
49
Rock Paper Scissors
3274
5.86
55
Matching Words
3183
5.91
94
Fool's Day 2014
SK
2771
6.15
59
Bulls and Cows
2864
6.09
61
Prime Numbers Generation
RU
2820
6.12
22
Two Printers
ES
RU
3019
6.00
42
Blackjack Counting
2592
6.27
120
Selection Sort
2036
6.69
38
Quadratic Equation
2389
6.41
33
Parity Control
RU
2341
6.45
171
Tree Height Measurement
1450
7.28
53
King and Queen
2094
6.64
34
Binary Search
2155
6.59
69
Fibonacci Divisibility
1857
6.85
37
Mortgage Calculator
ZH
2022
6.70
45
Cards Shuffling
ZH
1965
6.75
63
Integer Factorization
ZH
1781
6.92
46
Tic-Tac-Toe
ZH
1826
6.88
72
Funny Words Generator
1592
7.11
62
Prime Ranges
1627
7.08
121
Insertion Sort
1345
7.41
172
Cloud Altitude Measurement
1085
7.78
127
Anagrams
1272
7.50
75
Yacht or Dice Poker
1505
7.21
134
Flying Text Screensaver
1178
7.64
39
Share Price Volatility
1505
7.21
156
Luhn Algorithm
SK
996
7.93
114
Tricky Printing
1120
7.73
80
Duel Chances
1134
7.70
135
Variable Length Code
889
8.13
74
Clock Hands
1070
7.80
36
Code Guesser
UA
1165
7.66
105
Convex Polygon Area
917
8.07
54
Pythagorean Triples
1036
7.86
145
Modular Exponentiation
767
8.38
73
Hexagonal Grid
945
8.02
116
Summing Up
813
8.28
97
Girls and Pigs
846
8.21
187
Static Web Page
583
8.86
181
Reverse Polish Notation
584
8.85
188
Basics of HTML
557
8.94
122
QuickSort
680
8.59
98
Azimuth at Treasure Island
730
8.47
85
Rotation in 2D Space
735
8.46
51
Dungeons and Dragons Dice
UA
795
8.32
56
Life is Simple
769
8.38
70
Most Frequent Word
705
8.53
40
Paths in the Grid
UA
767
8.38
66
Caesar Cipher Cracker
706
8.53
88
Pitch and Notes
646
8.68
108
Star Medals
595
8.82
211
Information Entropy
366
9.66
95
Simple Linear Regression
581
8.86
87
Tree Builder
591
8.83
207
Suffix Array
364
9.67
60
Sweet Harvest
625
8.74
77
Point to Segment Distance
585
8.85
176
Say 100
399
9.52
86
Brainfuck Interpreter
551
8.96
143
Extended Euclidean Algorithm
435
9.37
195
Mul Two
346
9.76
71
Fibonacci Divisibility Advanced
546
8.97
91
Game of 2048
510
9.09
191
Spaceship Weight Fraud
342
9.78
119
Brain Fibo
455
9.29
101
Gradient Calculation
476
9.21
206
Base-32 Encoding
309
9.96
82
Levenshtein Distance
488
9.17
89
Instrument Tuner
456
9.28
131
Four Pics One Word
386
9.57
64
Maze Pathfinder
473
9.22
189
Dynamic Web Page
300
10.01
79
Cycles Detection
436
9.36
92
Binary Heap
414
9.45
150
Introducing Regexps
329
9.85
126
Sequence of Squares
354
9.72
136
Variable Length Code Unpack
341
9.79
170
Binary Search in Array
291
10.06
167
Copy Line
292
10.06
197
Loops in Assembly
255
10.29
83
Graph Generator
391
9.55
90
Lexicographic Permutations
376
9.62
154
Breadth First Search
294
10.04
78
Bezier Curves
378
9.61
117
Divide by Two
321
9.89
99
Uphill Shooting
334
9.82
65
Transitive Closure on Candy States
362
9.68
144
Modular Inverse
273
10.17
155
Depth First Search
258
10.27
174
Calculation of Pi
236
10.42
161
Topological Sorting
243
10.37
133
Billiard Ball
260
10.26
165
Safe Landing
229
10.48
190
Query String Parameters
202
10.69
140
Proper Bracket Sequences
243
10.37
184
Matches Picking
quandray
200
10.71
76
Pawn Move Validator
291
10.06
96
Snake Arcade
272
10.18
103
Easter Eggs
258
10.27
123
Knapsack of Integers
239
10.40
93
Starving Priority Queue
262
10.24
130
Combinations with Repetitions
228
10.48
84
Dijkstra in the Network
265
10.22
173
Chords of Music
192
10.78
125
Bogosort
231
10.46
109
Lucky Tickets
226
10.50
146
Color Cubes
198
10.73
151
Word Ladders
190
10.80
208
Neighborhood of a String
145
11.27
164
Page Rank
172
10.97
129
Enumerating Combinations
196
10.75
138
Huffman Coding
186
10.84
194
Convex Hull and Farmers
147
11.24
139
Beam Balance and Masses
182
10.87
201
Point in Polygon
138
11.35
199
Employees Web App
139
11.34
192
Gangster Battles
136
11.38
152
RSA Cryptography
161
11.09
137
Shannon-Fano Coding
169
11.00
111
Necklace Count
176
10.93
110
Lucky Tickets Advanced
166
11.03
168
Caesar meets BF
133
11.42
202
Dancing Pairs
108
11.77
179
Look and Say binary
119
11.61
198
Prn Hex Str
109
11.76
162
Rubik's Cube
126
11.51
148
Public Key Cryptography Intro
133
11.42
214
Sick Travellers
99
11.92
124
Knapsack Backtracking
142
11.30
182
Frodo and Black Riders
112
11.71
106
Random Search Optimization
149
11.22
177
Nim Game
112
11.71
185
Simple 3D Scene
106
11.81
160
Social Web Scraper
117
11.64
102
Travelling Salesman
139
11.34
157
Emirp primE
113
11.70
158
Hamming Codes
111
11.73
159
Hard Life
103
11.86
196
Fibonacci Randomizer
85
12.19
153
Fermat goes hacking RSA
99
11.92
100
Crossing the Road
115
11.67
115
Gradient Descent for SLE
109
11.76
186
Simple 3D Scene (cont)
82
12.25
141
Sliding Window Search
97
11.96
210
Ticket Puzzle
69
12.54
209
Suffix Array Advanced
69
12.54
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
61
12.75
112
Travelling Salesman Inverted
92
12.05
216
Cracking Linear Congruential Generator
59
12.81
113
Ground Zero
89
12.11
132
Stream Cipher Breaking
80
12.29
163
Colliding Balls
70
12.52
175
Algae Robot
66
12.62
205
Clustering the Stars
56
12.90
200
Fizz Buzz in Asm
57
12.87
107
Knight's Tour
81
12.27
230
Move-To-Front Transform
47
13.20
204
Wandering Star
53
12.99
212
BCD to Hex
50
13.09
218
Rain Must Fall
DE
45
13.27
149
Prime Chains
60
12.78
233
Language Study
39
13.52
178
Maze of the Wumpus
49
13.13
147
Color Cubes Advanced
55
12.93
118
Maxit Single-Player
59
12.81
180
Simple Game of Sticks
46
13.24
223
Introducing Scheme
37
13.60
229
Burrows-Wheeler Transform
33
13.80
183
Connect Four
41
13.43
217
Personality Swap
29
14.01
238
Bear Hunt
25
14.26
234
Train Merge
25
14.26
169
Automated Landing
33
13.80
213
Micro-Life
SK
24
14.33
220
Neural Network Training
21
14.55
231
Dice Black Jack
17
14.90
221
XWords
quandray
17
14.90
222
Easter Eggs Advanced
16
15.00
235
Train Merge Advanced
14
15.22
215
Klotski
SK
13
15.34
237
Road Network Destruction
11
15.61
227
Hashtable Implementation
11
15.61
226
Multiplicative Persistence Backtrace
11
15.61
225
Hamurabi
11
15.61
224
Transposing List of Lists
10
15.76
236
Is the Earth Flat
8
16.11
232
Shift Register Randomizer
7
16.31
239
Foxes and Geese
6
16.54
228
Maze Mapping Robot
5
16.81