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 22.55
34
34
1880 Hanoi Calls   202 54.78
1881 Instruction Decoder   2 667 50.76
17
17
1960 Rectangles   4 171 16.60
34
28
1961 Roman Roads   1 98 30.90
9
17
1962 Circles   58 19.63
1963 Image Projections   105 33.72
1964 Tree cut   147 37.84
1965 Set Cover   2 25 12.10
1
17
1966 Ski Valley   113 18.26
1991 Another Continuous Fractions Problem   1 82 19.65
34
17
2000 Boxes (Hard)   2 17 3.07
26
34
2002 Random Number Generator   97 42.09
2005 Minus Operation   8 304 33.25
30
30
2006 Load Balancing   19 1905 47.62
11
19
2007 Another Very Easy Problem! WOW!!!   17 780 39.05
13
28
2008 Dab of Backpack   17 669 23.63
21
17
2009 Cryptography   1 142 4.80
1
34
2019 The Rolling Ball   3 5.08
2022 Truth Or Lie   102 22.26
2023 One Instruction Computer Simulator   47 11.02
42
42
2031 Please help You-Know-Who   36 32.68
2038 Rectangle Tiling   2 113 40.69
1
1
2047 Stone Removing Game   -1 132 37.92
2050 Strange Billboard   10 803 60.61
13
29
2051 Cell Phone   4 160 31.38
28
36
2052 Hexagonal Parcels   74 28.85
2053 Key Task   37 1185 31.75
24
22
2054 Gates of Logic   1 36 22.47
17
17
2055 Weird Numbers   2 343 35.87
17
17
2056 Rectangular Polygon   1 134 47.66
1
17
2058 Reaux! Sham! Beaux!   4 660 32.89
23
6
2059 Robotic Sort   5 701 32.62
28
26
2060 Tough Water Level   34 26.34
2070 Minimum Distance   82 16.94
17
1
2123 Candy I   99 29024 44.19
4
5
2124 Last Non-Zero Digit of Factorials   4 483 25.28
26
34
2125 Number Labyrinth   2 63 25.32
17
17
2127 Rain   4 435 40.47
20
15
2128 K-In-A-Row   6 440 33.54
17
11
2129 Cake   70 21.63
2130 Trolls   29 46.03
2131 Get Back!   1 53 40.00
17
17
2132 Puzzle   86 32.23
2136 Candy II   2 610 45.92
17
17
2138 Pibonacci   3 45 14.88
26
39

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