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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
10240 Circleland   4 713 31.90
13
17
30738 Ada and Coins   59 867 31.89
14
22
11386 Recycled Numbers   1 198 31.86
4033 Phone List   151 7337 31.82
16
14
3482 Alias   7 31.82
21193 Adjusting Ducks   3 67 31.82
20
27
1167 Move To Invert   13 2461 31.80
8
16
14892 Good Aim   -1 37 31.79
34
17
2053 Key Task   37 1188 31.78
24
22
183 Assembler circuits   61 31.78
9032 Cube Free Numbers   66 4167 31.77
12
11
2139 Gossipers   3 602 31.76
21
26
10242 Dice on a Board   20 31.76
3912 Color a tree   1 298 31.76
17
34
26954 k Alternating Sum   11 81 31.75
23
26
9434 New Horizons   11 31.75
15634 Lennys Lucky Lotto Lists   11 239 31.74
7
14
2852 Broken Keyboard   19 1220 31.73
14
14
2856 Help Bob   6 278 31.72
21
23
5699 The last digit re-visited   39 7471 31.71
9
9
18187 Ingredients   10 295 31.69
21
23
18963 Bhagat The Bit Man   10 661 31.69
5
12
4259 Pilots   34 1755 31.69
17
20
26350 TWO SEQUENCES PROBLEM   12 271 31.69
10
15
26301 Bits. Exponents and Gcd   4 160 31.67
21
26
5084 Discrete Math Problem   6 287 31.66
15
24
32900 K-dominant array   3 385 31.63
30
30
10 Complicated Expressions   11 1581 31.63
17
17
2835 Memory Limit Exceeded   1 92 31.60
26
26
1961 Roman Roads   1 103 31.59
9
17
34624 Longest palindrome with no adjacent duplicates   2 95 31.59
28
17
28307 Ada and Game   54 630 31.58
14
19
9694 Quelling Blade   10 31.58
38389 Phasmophobia   5 30 31.58
39
39
84 Shortcut   1 237 31.56
17
9
3893 Space settlement   67 31.56
20957 Alia and 3 Khans   1 77 31.54
34
17
3894 Bouncing Balls   28 31.54
17443 Magical Bus Journey   2 62 31.52
9
9
1707 Reliable Nets   4 342 31.51
28
23
9509 Shortest Path on a Cylinder   28 31.51
18245 Maggu and Triangles   -1 423 31.50
1
17
9569 Sum of Pairwise Products   7 841 31.50
6
13
18662 Product of factorials (again)   3 86 31.50
11
24
8982 Representatives   20 442 31.50
17
16
7777 National Treasure   35 31.50
7380 Factorial challenge   5 344 31.49
14
26
5010 Lost in Madrid   1 194 31.49
1
1
13363 WIND VANE   6 394 31.48
17
17
56 Dyzio   8 1225 31.47
11
14

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