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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1875 Cool Numbers   7 168 30.21
34
34
1876 Dragon Curves   2 175 49.88
1
17
1877 Enrich my purse   153 27.01
1878 Farmers Cattle   1 57 37.07
34
34
1879 Game Time   1 101 22.21
34
34
1880 Hanoi Calls   204 54.34
1881 Instruction Decoder   2 668 50.81
17
17
1960 Rectangles   4 173 16.64
34
28
1961 Roman Roads   1 102 31.43
9
17
1962 Circles   62 20.12
1963 Image Projections   109 34.26
1964 Tree cut   149 38.10
1965 Set Cover   2 25 10.92
1
17
1966 Ski Valley   117 18.43
1991 Another Continuous Fractions Problem   1 83 19.83
34
17
2000 Boxes (Hard)   2 17 2.95
26
34
2002 Random Number Generator   98 40.62
2005 Minus Operation   8 307 33.47
30
30
2006 Load Balancing   19 1910 47.56
11
19
2007 Another Very Easy Problem! WOW!!!   17 789 39.08
13
28
2008 Dab of Backpack   17 672 23.70
21
17
2009 Cryptography   1 142 4.79
1
34
2019 The Rolling Ball   4 5.48
2022 Truth Or Lie   104 21.17
2023 One Instruction Computer Simulator   47 10.58
42
42
2031 Please help You-Know-Who   38 28.42
2038 Rectangle Tiling   2 116 41.61
1
1
2047 Stone Removing Game   -1 132 37.84
2050 Strange Billboard   10 805 60.55
13
29
2051 Cell Phone   4 161 31.43
28
36
2052 Hexagonal Parcels   76 28.93
2053 Key Task   37 1188 31.78
24
22
2054 Gates of Logic   1 37 24.60
17
17
2055 Weird Numbers   2 345 36.13
17
17
2056 Rectangular Polygon   1 135 48.12
1
17
2058 Reaux! Sham! Beaux!   4 663 32.92
23
6
2059 Robotic Sort   5 730 33.02
28
26
2060 Tough Water Level   36 18.21
2070 Minimum Distance   86 16.85
17
1
2123 Candy I   99 29096 44.21
4
5
2124 Last Non-Zero Digit of Factorials   4 488 25.49
26
34
2125 Number Labyrinth   2 64 25.55
17
17
2127 Rain   4 438 40.61
20
15
2128 K-In-A-Row   6 445 33.72
17
11
2129 Cake   70 21.59
2130 Trolls   29 39.19
2131 Get Back!   1 55 40.67
17
17
2132 Puzzle   89 32.68
2136 Candy II   2 613 46.00
17
17
2138 Pibonacci   3 48 14.11
26
39

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