list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1876 Dragon Curves   1 162 49.87
1
34
1877 Enrich my purse   150 27.08
1878 Farmers Cattle   1 57 38.38
34
34
1879 Game Time   1 96 24.02
34
34
1880 Hanoi Calls   198 55.53
1881 Instruction Decoder   2 651 50.72
17
17
1960 Rectangles   2 146 17.51
34
28
1961 Roman Roads   1 95 30.25
9
17
1962 Circles   51 18.53
1963 Image Projections   99 33.15
1964 Tree cut   142 37.83
1965 Set Cover   1 24 12.73
1
17
1966 Ski Valley   109 18.10
1991 Another Continuous Fractions Problem   71 18.35
2000 Boxes (Hard)   1 15 3.08
17
34
2002 Random Number Generator   82 44.30
2005 Minus Operation   6 284 34.20
29
31
2006 Load Balancing   7 818 50.21
9
19
2007 Another Very Easy Problem! WOW!!!   13 698 40.09
14
29
2008 Dab of Backpack   15 594 23.91
20
17
2009 Cryptography   77 2.99
2019 The Rolling Ball   2 4.76
2021 Moving Pebbles   -1 173 19.94
50
34
2022 Truth Or Lie   100 22.91
2023 One Instruction Computer Simulator   38 9.94
2031 Please help You-Know-Who   31 32.52
2038 Rectangle Tiling   1 98 41.76
1
1
2047 Stone Removing Game   -1 124 37.22
2050 Strange Billboard   7 756 63.26
9
28
2051 Cell Phone   1 137 31.74
34
42
2052 Hexagonal Parcels   71 29.10
2053 Key Task   26 975 33.28
24
21
2054 Gates of Logic   1 35 24.52
17
17
2055 Weird Numbers   1 334 35.43
17
17
2056 Rectangular Polygon   126 48.03
2058 Reaux! Sham! Beaux!   3 648 32.56
23
6
2059 Robotic Sort   4 249 26.91
24
27
2060 Tough Water Level   31 26.09
2070 Minimum Distance   73 19.39
2123 Candy I   69 20591 44.80
3
4
2124 Last Non-Zero Digit of Factorials   2 442 24.98
28
34
2125 Number Labyrinth   2 50 22.79
17
17
2127 Rain   2 413 39.67
13
13
2128 K-In-A-Row   4 406 34.36
13
9
2129 Cake   65 21.88
2130 Trolls   29 48.33
2131 Get Back!   51 39.85
2132 Puzzle   84 32.87
2136 Candy II   2 575 45.69
17
17
2138 Pibonacci   2 37 15.06
28
42

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