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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
83 Bundling   1 57 34.04
17
17
82 Easy Problem   4 508 34.70
17
9
78 Marbles   68 8227 34.99
15
13
77 New bricks disorder   1 290 37.79
17
17
76 Editor Inverse   69 15.98
75 Editor   51 26.94
73 Bacterial   1 76 18.66
50
17
71 Tree   3 465 28.80
12
9
70 Relations   2 254 28.80
9
17
69 Moulds   2 136 34.99
12
12
68 Expression   168 28.55
1
34
67 Cutting out   2 303 40.85
30
27
66 Cross-country   38 4115 64.54
11
12
65 Ball   2 159 35.03
17
23
64 Permutations   98 4411 52.18
12
20
63 Square Brackets   92 3888 56.74
14
18
62 The Imp   1 300 31.14
17
23
61 Brackets   178 5548 24.47
19
20
60 The Gordian Dance   3 237 40.09
12
45
59 Bytelandian Information Agency   2 421 19.64
17
23
58 Crime at Piccadily Circus   3 651 14.03
31
21
57 Supernumbers in a permutation   22 1110 33.01
17
19
56 Dyzio   8 1225 31.47
11
14
55 Jasiek   3 479 28.42
21
13
54 Julka   165 23423 27.54
19
6
51 Fake tournament   43 1818 26.95
18
19
50 Invitation Cards   29 1781 43.12
16
18
49 Hares and Foxes   1 118 7.82
17
26
48 Glass Beads   29 3473 38.07
15
18
47 Skyscraper Floors   8 295 12.70
22
22
45 Commedia dell Arte   2 251 32.38
5
26
44 Substitution Cipher   3 339 13.79
17
17
43 Copying Books   45 2849 25.81
19
19
42 Adding Reversed Numbers   103 87928 48.68
6
4
41 Play on Words   43 3311 19.60
21
24
40 Lifting the Stone   6 1651 23.80
13
16
39 Piggy-Bank   140 8247 35.53
14
16
38 Labyrinth   98 5361 25.82
18
16
37 The Proper Key   1 142 13.93
17
17
36 Secret Code   6 553 35.34
17
17
35 Equipment Box   6 1329 14.46
8
21
34 Run Away   2 538 22.39
26
34
33 Trip   17 2072 26.41
25
16
32 A Needle in the Haystack   193 11375 38.37
15
14
31 Fast Multiplication   49 9042 20.71
15
12
30 Bytelandian Blingors Network   54 3791 39.26
14
10
29 Hash it!   14 3650 24.17
14
8
28 Help the Military Recruitment Office!   8 805 16.24
12
9
27 Sorting Bank Accounts   53 8975 40.34
11
6
26 Build the Fence   37 2265 28.13
22
17

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