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list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1875 Cool Numbers   7 166 30.07
34
34
1876 Dragon Curves   2 174 50.12
1
17
1877 Enrich my purse   153 27.21
1878 Farmers Cattle   1 57 37.07
34
34
1879 Game Time   1 101 22.52
34
34
1880 Hanoi Calls   204 53.99
1881 Instruction Decoder   2 667 50.76
17
17
1960 Rectangles   4 172 16.70
34
28
1961 Roman Roads   1 98 30.83
9
17
1962 Circles   58 19.63
1963 Image Projections   105 33.57
1964 Tree cut   148 37.89
1965 Set Cover   2 25 11.66
1
17
1966 Ski Valley   113 18.15
1991 Another Continuous Fractions Problem   1 83 19.83
34
17
2000 Boxes (Hard)   2 17 3.07
26
34
2002 Random Number Generator   96 41.78
2005 Minus Operation   8 305 33.28
30
30
2006 Load Balancing   19 1905 47.62
11
19
2007 Another Very Easy Problem! WOW!!!   17 781 39.07
13
28
2008 Dab of Backpack   17 670 23.63
21
17
2009 Cryptography   1 142 4.80
1
34
2019 The Rolling Ball   3 4.92
2022 Truth Or Lie   103 22.05
2023 One Instruction Computer Simulator   47 11.00
42
42
2031 Please help You-Know-Who   36 30.12
2038 Rectangle Tiling   2 114 40.84
1
1
2047 Stone Removing Game   -1 133 38.16
2050 Strange Billboard   10 804 60.65
13
29
2051 Cell Phone   4 161 31.47
28
36
2052 Hexagonal Parcels   74 28.85
2053 Key Task   37 1186 31.75
24
22
2054 Gates of Logic   1 37 24.60
17
17
2055 Weird Numbers   2 344 35.90
17
17
2056 Rectangular Polygon   1 134 47.66
1
17
2058 Reaux! Sham! Beaux!   4 661 32.94
23
6
2059 Robotic Sort   5 705 32.71
28
26
2060 Tough Water Level   34 25.96
2070 Minimum Distance   82 16.88
17
1
2123 Candy I   99 29038 44.20
4
5
2124 Last Non-Zero Digit of Factorials   4 484 25.31
26
34
2125 Number Labyrinth   2 65 25.79
17
17
2127 Rain   4 435 40.47
20
15
2128 K-In-A-Row   6 442 33.64
17
11
2129 Cake   71 21.52
2130 Trolls   29 46.03
2131 Get Back!   1 53 40.00
17
17
2132 Puzzle   87 32.45
2136 Candy II   2 611 45.87
17
17
2138 Pibonacci   3 45 14.88
26
39

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