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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
12471 DIE HARD   157 7984 38.68
12
13
12150 Just Next !!!   75 6668 23.12
12
11
32724 nth number   4 644 24.63
12
11
36166 Lucifer and Magical Substrings   14 105 46.38
12
13
4560 The Double HeLiX   147 8980 37.55
11
10
7718 Number of common divisors   87 7297 24.45
11
13
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
18598 Encode Message   13 875 63.46
11
5
11516 VALIDATE THE MAZE   64 3183 32.23
11
8
91 Two squares or not two squares   79 6096 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
9655 Elevator Trouble   96 4335 32.41
11
11
10108 Distributing Ballot Boxes   32 1165 36.21
11
15
13643 BATMAN3   9 918 41.72
11
12
18937 Touch of Venom   21 1406 23.29
11
13
346 Bytelandian gold coins   546 26017 25.23
11
12
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 38.05
11
12
16554 Linearian Colony   12 866 42.70
11
12
36583 Game of Square   12 137 28.32
11
11
10582 subarrays   215 9569 34.36
11
13
13769 Roommate Agreement   52 1493 31.45
11
16
7975 Tri graphs   87 4871 29.13
11
10
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
6691 Picking Up Chicks   29 2262 32.15
11
18
28306 Ada and Queue   28 2516 26.02
11
9
2006 Load Balancing   19 1910 47.55
11
19
56 Dyzio   8 1225 31.47
11
14
66 Cross-country   38 4115 64.54
11
12
176 Sum of one-sequence   5 671 33.60
11
27
390 Billiard   1 903 54.53
11
21
3544 Binary Search Tree   6 611 21.01
11
20
6285 Another Game With Numbers   32 1333 31.23
11
13
6828 Lineup   7 704 32.08
11
9
7405 Delicious Pancakes   1 736 27.06
11
11
8917 How Many Plusses   7 183 31.41
11
14

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