list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
1876 Dragon Curves   2 172 50.00
1
17
1877 Enrich my purse   152 27.30
1878 Farmers Cattle   1 57 37.62
34
34
1879 Game Time   1 100 24.28
34
34
1880 Hanoi Calls   200 55.88
1881 Instruction Decoder   2 658 50.58
17
17
1960 Rectangles   3 156 16.98
34
28
1961 Roman Roads   1 96 30.54
9
17
1962 Circles   51 18.44
1963 Image Projections   100 33.33
1964 Tree cut   143 37.96
1965 Set Cover   1 24 11.93
1
17
1966 Ski Valley   109 18.10
1991 Another Continuous Fractions Problem   1 80 19.61
34
17
2000 Boxes (Hard)   1 15 3.08
17
34
2002 Random Number Generator   79 41.25
2005 Minus Operation   8 296 33.00
30
30
2006 Load Balancing   18 1745 47.47
11
18
2007 Another Very Easy Problem! WOW!!!   16 731 39.35
13
28
2008 Dab of Backpack   18 652 23.37
21
17
2009 Cryptography   1 128 4.37
1
34
2019 The Rolling Ball   2 3.64
2022 Truth Or Lie   101 23.05
2023 One Instruction Computer Simulator   1 38 9.94
34
34
2031 Please help You-Know-Who   32 30.94
2038 Rectangle Tiling   2 104 41.78
1
1
2047 Stone Removing Game   -1 127 37.25
2050 Strange Billboard   8 783 60.45
13
29
2051 Cell Phone   3 150 30.88
30
37
2052 Hexagonal Parcels   71 28.81
2053 Key Task   35 1129 31.86
24
22
2054 Gates of Logic   1 35 23.03
17
17
2055 Weird Numbers   1 335 35.39
17
17
2056 Rectangular Polygon   128 46.93
2058 Reaux! Sham! Beaux!   3 652 32.68
23
6
2059 Robotic Sort   5 373 25.71
28
26
2060 Tough Water Level   32 26.18
2070 Minimum Distance   74 19.50
2123 Candy I   91 25768 43.84
3
4
2124 Last Non-Zero Digit of Factorials   4 462 24.97
26
34
2125 Number Labyrinth   2 55 23.76
17
17
2127 Rain   2 426 40.03
13
13
2128 K-In-A-Row   4 418 33.97
13
9
2129 Cake   63 21.18
2130 Trolls   29 48.33
2131 Get Back!   51 39.85
2132 Puzzle   84 32.65
2136 Candy II   2 586 45.55
17
17
2138 Pibonacci   3 42 15.03
26
39
2139 Gossipers   3 570 31.57
21
26

Most popular tags