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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
58 Crime at Piccadily Circus   3 640 13.95
31
21
59 Bytelandian Information Agency   2 413 19.51
17
23
60 The Gordian Dance   3 210 38.87
12
45
61 Brackets   175 5437 24.42
19
20
62 The Imp   1 292 30.33
17
23
63 Square Brackets   92 3854 56.84
14
18
64 Permutations   98 4321 51.97
12
20
65 Ball   2 152 35.05
17
23
66 Cross-country   38 4072 64.51
11
12
67 Cutting out   2 295 43.16
30
27
68 Expression   163 30.09
1
34
69 Moulds   2 132 35.78
12
12
70 Relations   2 250 28.61
9
17
71 Tree   3 450 28.46
12
9
73 Bacterial   1 70 18.96
50
17
76 Editor Inverse   64 14.98
77 New bricks disorder   1 285 37.82
17
17
78 Marbles   68 7956 34.97
15
13
82 Easy Problem   4 494 34.77
17
9
83 Bundling   1 52 40.41
17
17
84 Shortcut   1 233 31.59
17
9
85 Dice Contest   47 22.05
34
34
86 November Rain   4 294 17.54
21
21
87 Football   1 62 21.74
17
1
88 Which is Next   1 129 20.64
34
34
89 Hang or not to hang   1 61 16.15
17
17
90 Minimizing maximizer   3 370 25.16
17
26
91 Two squares or not two squares   79 6032 24.60
11
14
92 Cutting off Squares   -1 254 42.63
1
1
94 Numeral System of the Maya   4 2581 40.51
10
6
95 Street Parade   318 18268 29.02
14
11
96 Shopping   46 3057 44.13
15
11
97 Party Schedule   251 8854 36.18
14
16
98 Dance Floor   3 718 40.30
12
12
99 Bus   184 22.16
34
17
100 Tower of Babylon   44 3061 50.50
19
21
101 Fishmonger   48 2299 38.11
17
21
102 GX Light Pipeline Inc   76 30.54
104 Highways   2 769 20.05
23
28
105 Alice and Bob   3 171 27.45
42
42
106 Binary Stirling Numbers   3 2638 36.67
4
17
107 Calendar of the Maya   5 133 44.65
21
17
108 Decoding Morse Sequences   7 863 24.18
24
17
109 Exchanges   1 126 45.35
34
110 Fill the Cisterns   29 1408 31.34
21
20
112 Horizontally Visible Segments   1 157 27.85
17
34
115 Family   2 72 12.10
28
28
116 Intervals   5 962 22.83
21
24
118 Rhombs   105 47.21
1
34
119 Servers   111 19.81
17
17

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