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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
20931 Square-Free Product (Hard)   2 65 36.36
17
21
25015 Subsequences with modulo   5 65 21.26
34
34
27377 Bono v3   3 65 20.93
17
26
31972 Ada and Power   5 65 41.29
17
17
1004 Polygon Encoder   64 11.12
17
1
2125 Number Labyrinth   2 64 25.55
17
17
3197 Tree Construction   64 20.10
3347 Cestarine   64 29.10
4421 Irreducible polynomials over GF2   64 18.04
7408 Camelot   2 64 30.88
17
17
7746 Cocircular Points   64 16.93
42
17
9331 DCD   64 52.07
17
1
10082 Comparing Answers   64 13.14
11493 Goto & labels   64 30.83
12322 NSquare Sum ( Medium )   64 35.65
30
21
25182 Acceptable numbers   2 64 16.24
12
23
25810 Divisibility Test   10 64 13.33
24
26
30973 Ada and Tomato   4 64 18.05
30
34
34484 Candy pair   7 64 42.15
15
22
121 Timetable   63 16.42
17
17
1800 Fixed Partition Contest Management   63 36.99
17
1
2324 Mario   1 63 14.00
34
34
2418 Flying Frogs   63 35.71
3390 Tribe Council   1 63 21.36
34
34
4551 Match Maker   1 63 22.91
7970 Jumping Beans   1 63 27.96
17
17
9985 Distance   2 63 23.06
42
34
10072 Lights   1 63 47.47
17
34
10945 Foodie Golu   63 28.36
12436 The One-Dimensional Pool Table   1 63 41.35
1
34
15769 Enjoy Adding GP to Series   2 63 26.67
28
34
21671 Jumppy and the Grid   4 63 33.10
21
21
26799 Counter-Smack   3 63 20.65
12
23
30691 Ada and Diary   3 63 17.90
9
9
278 Bicycle   62 13.55
34
1
334 The Philosophical Dispute   62 37.31
17
17
1465 On the Way to Find Chris   2 62 15.35
23
23
1962 Circles   62 20.12
2735 Simplify the Railroad System   62 35.19
17
1
2855 Forest   62 12.68
4311 Quasi-template   62 34.52
4410 Repair the Door   62 22.96
6576 Divide and Conquer   2 62 16.51
17
26
7772 Help a researcher   62 48.95
7857 Tower Game (Hard)   62 14.63
34
34
16138 Deconnecting   1 62 31.22
1
9
16178 Change   62 10.38
17443 Magical Bus Journey   2 62 31.52
9
9
28180 Sanvi Hates Palindrome   5 62 36.32
13
13
28599 Counting Magical Permutatitons   7 62 29.08
17
29

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