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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
58 Crime at Piccadily Circus   3 644 13.93
31
21
59 Bytelandian Information Agency   2 416 19.56
17
23
60 The Gordian Dance   3 234 40.35
12
45
61 Brackets   177 5475 24.39
19
20
62 The Imp   1 295 30.40
17
23
63 Square Brackets   92 3865 56.73
14
18
64 Permutations   98 4354 52.03
12
20
65 Ball   2 154 34.96
17
23
66 Cross-country   38 4091 64.47
11
12
67 Cutting out   2 297 41.06
30
27
68 Expression   164 29.58
1
34
69 Moulds   2 132 34.90
12
12
70 Relations   2 250 28.58
9
17
71 Tree   3 451 28.47
12
9
73 Bacterial   1 72 19.01
50
17
76 Editor Inverse   66 15.86
77 New bricks disorder   1 285 37.73
17
17
78 Marbles   68 8068 34.95
15
13
82 Easy Problem   4 500 34.79
17
9
83 Bundling   1 53 40.00
17
17
84 Shortcut   1 233 31.59
17
9
85 Dice Contest   47 21.78
34
34
86 November Rain   4 296 17.56
21
21
87 Football   1 65 20.98
17
1
88 Which is Next   1 129 20.11
34
34
89 Hang or not to hang   1 61 15.67
17
17
90 Minimizing maximizer   3 381 24.72
17
26
91 Two squares or not two squares   79 6067 24.64
11
14
92 Cutting off Squares   -1 257 41.87
1
1
94 Numeral System of the Maya   4 2585 40.50
10
6
95 Street Parade   318 18430 29.05
14
11
96 Shopping   46 3077 44.14
15
11
97 Party Schedule   251 8888 36.19
14
16
98 Dance Floor   3 718 40.18
12
12
99 Bus   187 22.25
34
17
100 Tower of Babylon   45 3074 50.44
19
21
101 Fishmonger   48 2308 38.15
17
21
102 GX Light Pipeline Inc   77 31.02
104 Highways   2 792 20.23
23
28
105 Alice and Bob   3 172 27.05
42
42
106 Binary Stirling Numbers   3 2678 36.91
4
17
107 Calendar of the Maya   5 133 44.41
21
17
108 Decoding Morse Sequences   7 871 24.18
24
17
109 Exchanges   1 126 45.35
34
110 Fill the Cisterns   29 1412 31.34
21
20
112 Horizontally Visible Segments   1 158 27.87
17
34
115 Family   2 73 12.00
28
28
116 Intervals   5 1108 23.55
21
24
118 Rhombs   107 47.43
1
34
119 Servers   112 19.78
17
17

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