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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1 Life, the Universe, and Everything   300 217318 33.07
4
3
2 Prime Generator   627 80216 16.10
15
13
4 Transform the Expression   258 43362 49.25
12
11
5 The Next Palindrome   452 20166 10.74
25
18
6 Simple Arithmetics   11 3030 12.16
30
9
7 The Bulk!   6 511 15.62
30
24
8 Complete the Sequence!   32 4414 37.31
16
18
9 Direct Visibility   4 256 11.78
30
21
10 Complicated Expressions   11 1555 32.01
17
17
11 Factorial   174 58912 44.94
6
12
12 The Game of Master-Mind   1 757 46.16
17
17
13 Hotline   2 207 16.66
34
23
14 I-Keyboard   7 1284 43.38
23
22
15 The Shortest Path   156 7562 24.08
17
12
16 Sphere in a tetrahedron   12 3508 56.08
11
16
17 The Bytelandian Cryptographer (Act I)   9 1366 41.81
15
26
20 The Bytelandian Cryptographer (Act IV)   2 55 26.39
21
34
22 Triangle From Centroid   9 2670 46.12
9
22
23 Pyramids   -20 5650 36.86
9
15
24 Small factorials   154 50243 29.65
15
9
25 Pouring water   100 5421 24.24
19
22
26 Build the Fence   37 2227 28.13
22
17
27 Sorting Bank Accounts   53 8796 40.38
11
6
28 Help the Military Recruitment Office!   7 784 16.13
12
8
29 Hash it!   14 3596 24.14
14
8
30 Bytelandian Blingors Network   54 3747 39.15
14
10
31 Fast Multiplication   48 8878 20.78
15
12
32 A Needle in the Haystack   193 11078 38.26
15
14
33 Trip   17 1996 26.38
25
16
34 Run Away   2 495 21.70
26
34
35 Equipment Box   6 1312 14.56
8
21
36 Secret Code   6 546 36.15
17
17
37 The Proper Key   1 135 13.97
17
17
38 Labyrinth   98 5312 25.76
18
16
39 Piggy-Bank   140 8126 35.44
14
16
40 Lifting the Stone   6 1615 23.59
13
16
41 Play on Words   42 3231 19.40
21
24
42 Adding Reversed Numbers   103 78948 48.24
6
4
43 Copying Books   45 2783 25.62
19
19
44 Substitution Cipher   3 326 13.57
17
17
45 Commedia dell Arte   2 241 33.60
5
26
47 Skyscraper Floors   8 287 12.77
22
22
48 Glass Beads   29 3408 37.89
15
18
49 Hares and Foxes   1 107 7.58
17
26
50 Invitation Cards   29 1735 42.91
16
18
51 Fake tournament   43 1800 27.22
18
19
54 Julka   163 23138 27.44
19
6
55 Jasiek   3 466 28.30
21
13
56 Dyzio   8 1213 31.45
11
14
57 Supernumbers in a permutation   22 1071 32.75
17
19

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