1. Classical
  2. Challenge
  3. Partial
  4. Tutorial
  5. Riddle
  6. Basics
  7. #tags

ID NAME QUALITY USERS ACC % DIFFICULTY C I
42 Adding Reversed Numbers   103 87882
6
4
4300 Rectangles   176 27063
5
8
4301 Tables   14 6628
2
3
29154 SUM OF DIGITS   11 3811
4
4
29695 GO GOA GONE   25 900
12
13
8061 Christmas Play   57 7792
6
4
13043 The Mirror of Galadriel   33 5980
2
3
4549 Adding Sevens   19 1934
17
6
5450 Tiles of Tetris, Not!   15 3205
4
5
4452 Simple Arithmetics II   55 7512
11
5
328 Bishops   83 8988
14
7
2852 Broken Keyboard   19 1219
14
14
17110 Black Widow Rings   15 2727
3
3
3921 The Great Ball   60 3950
7
11
10442 Candy Distribution   22 3931
2
4
19224 Lights, Snakes and Cages   5 93
24
34
2123 Candy I   99 29114
4
5
2148 Candy III   54 20552
9
5
1285 Continuous Fractions Again   5 376
15
10
1326 A Chase In WonderLand   2 411
6
1
2018 Clique Separation   77
16134 Save the cows!   5 61
1
6
16891 Character Patterns (Act 8)   1 525
6
1
4004 Exploding CPU   146
13769 Roommate Agreement   52 1493
11
16
26315 Crazy Smoker   24 1353
4
9
16778 Sir and the Guitar   6 151
4
5
867 Perfect Cubes   11 2240
7
5
17397 End of Fun   14 358
17
16
1166 Dead Fraction   323
12
17
2320 Manhattan   9 703
20
34
56 Dyzio   8 1225
11
14
25306 Easy Marks   4 468
1
1
1688 A Very Easy Problem!   40 6171
12
11
16420 Even Numbers   40 5279
6
5
3253 Electronic Document Security   3 156
23
6
1030 Triple Fat Ladies   106 19216
4
12
18714 Can You Make It Empty 2   15 1324
8
11
1787 Run Length Encoding   7 861
13
3
9788 Friends of Friends   67 7149
7
5
366 Farmer   1 271
1
1
1025 Fashion Shows   30 27873
3
3
6236 Matches   8 458
26
7
5970 Finding Primes   22 1345
16
15
9055 Most Frequent Value   31 821
15
21
18176 FRIENDSHIP!!!   16 631
15
21
8319 GLJIVE   -85 4406
2
5
34275 Game Store   11 212
5
6
2525 Encoding   3 752
12
12
2526 Decoding   9 1041
23
15

#ad-hoc-1

Problem requires no specific knowledge and the solution is not intended to be adapted to other purposes


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