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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
28306 Ada and Queue   28 2517 26.02
11
9
16 Sphere in a tetrahedron   12 3552 55.22
11
16
739 The Moronic Cowmpouter   19 3062 50.64
11
15
14138 Amazing Factor Sequence   38 2351 37.25
11
12
15376 Running Median   15 1182 26.19
11
9
35276 Smallest on the Stack   22 912 15.08
11
13
7975 Tri graphs   87 4871 29.13
11
10
13769 Roommate Agreement   52 1493 31.45
11
16
10582 subarrays   215 9569 34.36
11
13
4942 Integer Factorization (15 digits)   45 3695 32.76
11
11
9650 Mega Inversions   12 617 42.94
11
18
14543 Range Sum   26 1014 38.04
11
12
16554 Linearian Colony   12 866 42.70
11
12
36583 Game of Square   12 137 28.32
11
11
346 Bytelandian gold coins   546 26019 25.23
11
12
13643 BATMAN3   9 918 41.72
11
12
18937 Touch of Venom   21 1406 23.29
11
13
10108 Distributing Ballot Boxes   32 1165 36.21
11
15
9655 Elevator Trouble   96 4335 32.41
11
11
91 Two squares or not two squares   79 6097 24.70
11
14
7741 Sequence   7 814 30.33
11
23
9119 Indiana Jones and the lost Soccer Cup   8 378 29.07
11
13
11895 DONALDO   7 518 24.81
11
13
14844 All Your Base   12 543 30.17
11
11
18829 Special Set   8 118 27.10
11
26
25067 Fibonacci Polynomial   8 238 41.45
11
19
34622 NICE SEQUENCES   17 165 50.66
11
13
36861 Yet Another Perfect Square Equation   9 61 31.97
11
19
11516 VALIDATE THE MAZE   64 3184 32.23
11
8
18598 Encode Message   13 875 63.46
11
5
5451 Not So Flat After All   9 1128 42.94
11
10
27380 Painting Hat   6 257 47.56
11
12
27497 Binary Protean Number   6 144 45.38
11
16
4560 The Double HeLiX   147 8980 37.55
11
10
7718 Number of common divisors   87 7297 24.45
11
13
32724 nth number   4 644 24.63
12
11
36166 Lucifer and Magical Substrings   14 105 46.38
12
13
12150 Just Next !!!   75 6670 23.13
12
11
12471 DIE HARD   157 7986 38.69
12
13
9805 Be Awesome As Barney Stinson   44 1860 68.30
12
13
15454 How to Handle the Fans   39 1530 50.54
12
11
3407 Candy   31 1371 42.66
12
20
3878 Rectangles Perimeter   58 2702 49.87
12
14
263 Period   57 3063 40.09
12
17
8042 Possible Friends   17 1191 37.21
12
10
9340 Arbitrage   37 1951 39.51
12
17
21615 Playing with GCD   21 1035 34.61
12
14
2906 GCD2   60 6869 36.48
12
11
64 Permutations   98 4413 52.19
12
20
3944 Bee Walk   19 1434 56.39
12
15

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